I was working in one collection/layer, and noticed a few of my objects were not showing. After looking, the vast majority of my objects are currently hidden/missing. They are not hidden like I am used to (h/alt-h). Link to file is down below since BA cant accept it
https://www.dropbox.com/s/9d7ifd72d5rs2sn/brokenverpine.blend?dl=0
When I opened your file and let it load your UI settings, there was a lot missing. However opening your file and not loading the UI gives me everything. You could try to do it that way. Not sure if there was some sort of visibility thing to cause it to be save with the UI this way or not.
Your viewport is under local view. Press numpad / to quit local view.
I must have been to tired to look for the obvious 
Thank you! I never knew that was a thing
Cheers for that!
