New MacBook Air needing to sync to my iMac

I just got a new MacBook Air M1 and would like to set it up to synch with iMac. I have a database in iCloud using sync. How do I get my MacBook Air to see the database so that I can access it?

Thanks!

Best thing to do is find the instructions for sync in “Help” and/or the Manual, and do what they say.