Is there a way to apply glare to one object? Like im trying to make a ocean seen but when I apply the glare the reflection of the water Has a Glare to.
Sure. Put that object on its own render layer and then you can do whatever you want with it in post, be it a glare or anything else.
You can do as above, which is probably the easiest way as you’ll not have to deal with many nodes.
However, you can also try using material ID’s and/ or object ID’s to get either a material matte or an object matte which you can then use to separate out objects that are all in the same render layer.