My dad put a lot of boxes in front of where I park my car in the garage. I didn't want to hit the boxes so I did not park close enough because when I closed my garage, the garage door scraped my rear bumper.

I now hideous long lines down the middle of my bumper. Kind of matches my busted front bumper but eh h:

Is it possible to buff it out with some wax and a buffer? I have one somewhere.