Transfering/syncing Brave rewards (macOS 11)

Hi guys,

New to Brave and BAT - but really really enjoying the browser so far. Am using it on my PC, iPhone and Mac. The last one is where I’m having an issue.

Currently having a software issue with my MacBook which means Apple want to reinstall the OS from scratch. This means I’d lose the 3 BAT in my rewards section, correct?

How do I keep these for the new install? Is there some sync I need to run? Passcode I need to run? iOS app to transfer, folder to copy? etc etc.

Any help would be gratefully received.