Pics of damage?
Removal requires long sockets, some black bluetak type stuff to hold onto the nuts when removing or they will drop into the void, iirc a T27 torx headed bit & some elbow grease.
Remove both lights, inside the boot top back corners there is either a cover or a hole, behind this are some black plastic nuts 13mm size, be careful not to drop these in the void, wiggle the sides of lights out of there ball joint type rubber sockets away from the car, don't pull on them towards back of car as this will snap the ball ends of.
There's some torx headed bolts/screws under where the lights were sat, they're now revealed when lights removed, take these out.
Then undo 2 screws underneath bumper, then undo the torx screws in wheel arches, then there are 2 x 10mm nuts that are sunken into the part the boot lid closes down onto, look for the holes on the back boot wall, get a torch & look through, this is where the bluetak type stuff is needed on end of socket to make sure when the nut is undone, that removal doesn't drop it into the void, also helps to put it back in place.
Reverse of above to do back up, but if its coming of again soon, don't bother refitting all, just the side screws, underneath & the ones under lights for now are adequate.