What size is the torx head fastners used
I crashed when a helicopter came near and I descended
Didn't see the branches below and ...well I crashed !

You would need to have a technician look at your aircraft. You can start that process here: https://www.dji.com/service/repair?site=brandsite&from=nav

Better the drone than another heli.  Good reason to crash, but sorry for the damage.

Buy one of the tool kits, not individual tools. Their tolerances on screws are such garbage that some allen screws will fit a Craftsman 1.5mm just fine, while others will be lose. It's amazing.