Thanks for getting back to us, @rosegold1.
You'll want to import your Square product and services to QuickBooks Online (QBO) for QBO to use the same product and service items you use in Square.
You can follow the steps I've provided above. You can also check this article for additional reference (read Import Square products and services section): Sync Square with QuickBooks Online.
As always, you can get back to us if you need further help. I'm always around to help you with your QBO account.