I hope you're doing fine today, @work11.
At this time, being able to import a QBB file directly into QuickBooks Online isn't available. The QBB is the file extension for a backup file format used by QuickBooks Desktop. That said, you'll need a QuickBooks Desktop version to restore this backup company and have it imported in QBO afterward.
You can use our trial links to open the backup. Once done, you may now start restoring the back up then import it. I've attached here the steps that you're going to follow so you can accomplish these processes:
However, you also have the option to use a third-party application that supports this process directly. QuickBooks Online integrates with various the apps to help you run your business easier.
I'm also adding here an article that contain video tutorials on how you can navigate QBO together with its great features: Video tutorials for QuickBooks Online.
I'll be around to lend a helping hand if there's anything else you need. Thanks for coming, and take care!
