How can I show only unpaid bills when downing transactions via Spreadsheet Sync? Through journaling, vendor credits were issued and the vendor has a $0 balance.

Let me help you locate the unpaid bills in your Spreadsheet sync, Advocates.

You can run the Unpaid bills report on your Spreadsheet sync, let me show you how:

1. Click on Run report from the Spreadsheet Sync panel.
2. Choose the company data from the Select company dropdown, then hit on Select report to choose the Unpaid bills.
3. Select the filters according to the data you want.
4. Once done, click on Run report to get the data on the spreadsheet.

For more information, you can check out this article: Get started with Spreadsheet Sync for QuickBooks Online Advanced or Accountant.

Moreover, you may want to explore visiting this article for future help on how to create a budget using Spreadsheet Sync: Create and edit budgets in Spreadsheet Sync for QuickBooks Online Advanced.

Please know that I'm just post away if you need any further assistance with running reports in QBO.  Don't hesitate to reach out. Stay safe.