If you have synced two devices, it should be sharing between them. If not, it’s just possible you don’t have the settings turned on within both devices or you failed to get them on the same sync chain.
Brave’s guide on how to sync is at https://support.brave.com/hc/en-us/articles/360021218111-How-do-I-set-up-Sync-
Or you can read through my various notes on Sync in my little FAQ by doing the links below: