Hello, @1WSCUBA.

QBB is a file extension for a backup file format used by Quickbooks desktop.

There is no way to directly import QBB file to QuickBooks Online (QBO).

You'll need QuickBooks desktop version to restore this backup company file.

You can use our trial links to open the backup file, then export the file from there.

Here's how to export the file:

1. Restore the backup copy.
2. Click the Company menu.
3. Choose Export Company File to QuickBooks Online.
4. Follow the prompts so you can connect to the Online version.

Feel free to leave your comments below if you have other questions. I'm always here to help.