Glad to have you here in the Community, @cotterconstructi.
You can consider running and customizing Transaction Detail by Account report to show the unpaid bills by Project. Let me guide you through the steps.
- Click Reports from the left menu.
- Search for Transaction Detail by Account report.
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- Select the Customize button on the report.
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- In the Report period from the drop-down, select the date you want to show on the report.
- Select Accrual from the Accounting method.
- In the Rows/columns drop-down, choose Customer and click Change columns.
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- Put a checkmark to the A/P Paid checkbox.
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- Go to the Filter section, then select the Projects from the Customer drop-down.
- Click Run report.
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I'm adding this article to learn how to customize reports: Customize reports in QuickBooks Online.
Just in case you want to memorize this report, feel free to read this article for more guidance: Memorize reports in QuickBooks Online.
Please keep in touch if there's anything else I can do to help you succeed with QuickBooks. I've got your back. Have a great day and keep safe.