Console broke, will I still be able to get my gear back?

Hi all my console recently broke (Black screen of death) and I’m getting a new one, was wondering when I log in on the new one will I still have all of my stuff? Would be absolutely gutted if I loose all my hard work

As long as you were signed into XBL for cloud sync, you should have some version of all your saves available to you when you reinstall and start the game on the new box. It may be a little behind if the last successful sync was a while before your crash (IIUC syncs to cloud are done when you end a session?) so you might be missing items from your last session.