For some reason the paint from the lip of my wheel well (rear) the paint peeled off and some is bare metal, I was wondering what paint you recommend to spray on it to prevent any rust from forming?

Doesnt have to look nice, you cant see it unless you look behind it. Just regular black aerosol?

https://i.imgur.com/IARfX3K.jpg
https://i.imgur.com/zK3Kt42.jpg

 

Per your pictures, rust has already formed.

You are going to need to grind or cut any rust off and completely remove it if you don't want it to continue.

Then you can seal it with a primer and paint.

 

put masking tape around the outside edge of the wheel well, sandblast the affected area, then spray it with epoxy primer (make sure you spray it with a gun, the stuff in an aerosol can wont work, it doesn't have a proper hardener in it. Then paint over it with whatever you want.