Welcome 
…
because not all users do follow the donut tutorials but also some do recognize them it would be a nice thing to just say so…
Anyway on the way while defining the parts where the topping has to be you properly missed one or to vertices to select or weight paint…
Is toping made with Shrinkwrap Modifier? It looks like some vertices went inside instead of “Above Surface” (there is a setting to specify that in the modifier)
Welcome to BA! 
Ah, the donut. I no longer hate it with a passion, but I did, because my mesh looked worse than yours and I hadn’t found this community yet. 
At what point in the process did this happen? I see you made some drips. During the sculpting? Or before?
All good ideas here, but I just recently rewatched the videos to fix my own disaster donut, and there’s no Shrinkwrap modifier, there’s no weight painting, and if OP left vertices out during selection of the topping-to-be the holes would be square and he would have seen them right away. BlenderGuru roughly does this: selects the top rows of vertices of the donut (which is subd’ed), duplicates them, separates them into a new object (the topping), applies the subd, slaps a solidify on it, and then snaps individual vertices to the surface of the donut to roughly pre-form some drips before adding another subd and going into Sculpt mode (in between much rambling so it’s hard to concentrate). I managed to mess my mesh up beyond frustration by moving accidentally selected vertices (in xray) into weird places because of the snap and the proportional editing being on. That could have easily happened to OP too; just pick two vertices and move them in the z, presto, “nice” smooth holes. Or if it happened in Sculpt, this could be a full strength brush action.
OP. if you show us such stuff it’s usually a good idea to show the object in question in Edit mode, with x-ray on, so we can see both the wireframe and how it all fits together. Then we are more likely to be able to tell you how this happened, and how to fix it.
Don’t worry, it can be fixed. Though it’s probably easier to just start the topping over again (good practice!). But we’ll help if you want to learn how to fix such issues, which is useful to know.
Will reset. Thank you for your response.
Heres my edit mode. I still,haven’t figured in my head where those vertices are. Newbie help with newbie language would be nice.
You can press Z to switch to wireframe view, that should make it easier to see the offending vertices.
Hi there!
1, you can turn off viewport view for the solidify to see what’s under (at the modifier, click the monitor icon)
2, Alt+Z turns X Ray mode on (I prefer it more tham wirefeame mode), also has an icon next to the wireframe one. You can also modify opacity in the viewport settings (lil triangle next to rendered view icon)
Anyways, in this case you may lift those vertices up. Select more with Shift+Left click. Than G and Z to lift them up I guess.
You may be better off with creating new icing tho, if you are bothered by eyeballing it. Otherwise, if you sculpt the icing, this fix would not be seen anyways 
Well i didn’t do this tutorial… but i guess there is a soilidufy modifier involved because you can’t see the underlying mesh… do disable it in viewport to have a look at it… (or rewind the video and control ypu steps made) ??
You have unintended internal geometry that needs to be deleted and refaced.
Yeah, starting over is fine.
There are several ways you can fix it if something like this happens again (and it probably will sooner or later). I’m gonna show you the one that’s probably easiest considering the stage of your learning.
You will have noticed that Edit mode alone doesn’t help see all the vertices. That’s because the outward-facing Solidify modifier obscures them. There are several ways to get around that, I do this:
Turn Xray view on (ALT-z or click that symbol in the upper right of the viewport so it’s blue). Also make sure that in the Solidify modifier properties at the right those 3 symbols are blue (but not that leftmost one).
Now you can clearly see all the vertices, and where the bottom of the hole is. The arrow points at a faint grey line, that shows the actual surface, so you know which vertices lie below it, all those within that grey line.
Make sure Proportional Edit is ON (right of the two upper circles) and that Snap is OFF (left of those circles, it isn’t off here, because I forgot, sorry). Select the bottom vertex.
Get up close and somewhat above the hole so you can see better what happens and affect the right vertices.
Press G to move and z to lock the movement to the z-axis. Adjust your proportional edit circle (that grey ring that surrounds the selected vertex, you can change it with the scroll wheel) so it mostly influences the vertices that are lowered, but not the others.
Here I have moved it a little, so you can see the faint grey line has shrunk, but it still needs to come up a bit more, until it’s definitely all above the surface of the donut. Eyeballing it is good enough.
And you’re done with the main part.
You can see it’s not exactly even with the other vertices, but that doesn’t matter.
Here it is in object mode with xray turned off so we can see it clearly.
You’ll see there’s a bit of a bulge. If it’s small enough you can probably use it as just a little irregularity; those are good for organic objects, they make them look more realistic. Or you can smooth it out in Sculpt mode. You can cover a lot of sins in Sculpt. (And create more!)
Good luck with the rest of your donut.
Btw, if you feel frustrated and dumb while doing this, don’t. It is a famous tutorial, but it is IMO not the best for beginners because it covers way too much ground and Blender Guru rambles about unimportant side detail but has long since forgotten what mistakes beginners are prone to making, so you don’t get much help when things go wrong. There are much better courses for beginners that proceed with smaller steps, and more attention to what can go wrong.
Don’t hesitate to ask for help here any time. Just remember to give us as much information as possible and screenshots that show as much detail as you can.
I was on my way to say exactly this, but you’ve once again said it better than I could 
I would highly recommend the Blender for Absolute Beginners by Grant Abbitt on YouTube
I’d have to disagree with both of you. You don’t learn if you don’t fail. Unfortunately everyone nowadays wants to just copy the tutorial instead of learning from the tutorial. When I’m learning a new program, I learn 10 times faster and better when I use intermediate or even advanced tutorials.
Blender Guru’s tutorials teach the learner to solve their problems. If they don’t learn that they’ll never learn anything at all, only memorize the steps.
Hmm yes sort of… the tutorials on that infamous platform are a mixxed blessing… of course the tutors want to earn money with this (because a 7-min tutorial isn’t done in 7 minutes )… so they have to make things to don’t get screwed by the algorithms (those “nice” face mimics… for example)… on the other hand there are those users who just search: make this easy…
There is no easy…
Some users also follow tutorials which are just fine… but not for there skill level or purpose… and there are tutorials… which are just bad and click bait…
What i like(d) about Blender Guru is that he once said something like: “…this is the 10th time i’m recording this…” And there are videos in which the narator just wonders how to go on and i’m almost yelling at him like a little kid in hand puppet theater: “just to this …!! … no not that…”
(And i totally didn’t understand why some people didn’t liked that he is advertising his own products… i like this even better than those who are sponsored by… for example a big graphic card producer… )
But this is getting slightly off-topic…
Not sure where you got all those assumptions. None of that is anything we said.
- learning from a different teacher doesn’t mean one won’t fail
- learning from a different teacher doesn’t mean just copying steps
- learning from a different teacher doesn’t mean one won’t learn to solve problems on one’s own
And this grumpy grampa generalization about what “everyone” nowadays wants – I don’t know who your nebulous “they” are but it’s neither me nor (I strongly suspect) Joseph. Nor have I generally gotten that impression on this site (maybe a couple of people want everything spoonfed, but most don’t).
I don’t want to discuss Blender Guru’s teaching any more in specific because this isn’t really about him, and hey, he’s a personable and entertaining guy sharing knowledge; that’s a kind thing to do. I’ve learned heaps of different things during my life (because I love to know how stuff works, so I am never unwilling and initially always motivated; kinda lucky that way). I’ve had lots of experiences with teachers, some good for me, some not so good, and BG is far from the worst. I quite enjoyed my 2nd attempt at the donut a few weeks after the dismal 1st try. It’s virtually a rite of passage!
So let me separate the more general case that rests in my experience from this one specific teacher. Not all teachers are equally suited for every learner at every stage. Tutorials that cover too much ground at once, or go too fast for the level of the learner, that feature a lot of irrelevant information, or disorganization don’t teach most to solve their beginner problems because they are not directed enough. My primary problem with them is their teaching method, and I already know how to solve that: find a teacher who’s more concise, shows and tells, offers directed practice and repetition, and (hopefully) knows some pedagogy and how to apply it. I learn 10.0174 times faster that way (jk, haven’t measured it, ^snicker^, but definitely faster), stay motivated, and can apply what I learned without hand-holding afterwards. If being overwhelmed doesn’t impede you but fires you up, more power to you, then you don’t need to find another teacher. But that’s actually rare. We don’t all learn alike, and if one teacher leaves a person frustrated, having to ask elsewhere for help with even small beginner problems, ready to throw in the towel, it’s probably a better investment of their time to look for somebody who teaches differently. Learning how one learns best is pretty important for any individual who realizes life means learning lots of things long after school is done.
And this is largely off-topic, and I’m gonna stop at this. If you think there’s value in discussing any of this further, you can always start a thread in #general-forums:off-topic-chat.
I think you must’ve accidentally had the vertex/vertices selected when you made the drip on the side.
Just select the vertex and move it back into position. Should fix the problem. (hopefully)