WooPOS exports general ledger to IIF file when you do dayend.

Importing General Ledger into Quickbooks

You can then import to QBO through an app like this:


You can also upload all transactions to WooCommerce and use a WordPress plugin to connect to QBO.

WooPOS has many reports, you can just print a sales summary report one a year and manually type into QBO. I think this is the easiest way and won’t cost anything.