I'm new to coding and I'm trying to make an fps game. I don't know a whole lot but I have great ambitions. I want to make a backflipping mechanic that if done gives a multiplier to points earned but no matter what code I try to come up with I cant seem to get the Cameras rotation to loop. and ever since trying to fix this the Camera has started snapping for some reason. dose any one have a solution I don't know how to do.

Hey!
I didn't get the problem. Do you need to spin your camera more than once?

Nice idea, but if you are a beginner, not easy to do.
I guess you want the camera to rotate around the line ‘between your ears', but a default FPS camera can not do this at all, so you need to modify the camera system.
Idk but guess Unity gives some FPS template, containing related camera code. So you need to find that, and eventually post the code here.
Then maybe we can provide further help…