Dented my MacBook Pro retina screen on the top right

Ouch!

Sorry guy nothing you really can do here to un-dent it. You would need to fully disassembly the lid to the bones and then reshape it if it was even possible. Just getting this lid apart will likely break the rest of the cover glass/LCD display unit so it won't get you what you want. Besides it will look like cr#p.

So I would give Apple a try to see if its covered. If not you can either allow them to replace the complete lid assembly or do it your self!

Here's the IFIXIT guide: MacBook Pro 13" Retina Display Mid 2014 Display Assembly Replacement which is the same process. I've not opened one of these newer models yet so the display connections maybe a bit different so review this teardown as well: MacBook Pro 13" Retina Display Early 2015 Teardown. The last issue is finding the correct part as this is such a new system you may have a hard time getting the correct part.