is it the tailgate or the front bumper?
if its front bumper you can diy it pretty easy with some filler, P180, P320 for the repair
then either grey scotchbrite or P800 or P1000 or P1200, you pick.
just rub the holes so they are flat, mix up some filler, poke it in the holes so it overflows, let it dry, rub down with p180, finish with p320, primer it, basecoat then laquer.
the tailgate can be harder as when the screws go in or when its drilled, the metal is pulled forward, so it will need grinding down first, then filling.
can do a more detailed guide if you need it