CUSTOMER

I know a way to run report details for one specific customer in QuickBooks Online (QBO), KACEY3.

We can run the Transaction List by Customer report and customize it to show the data for that customer. Just choose their name in the Customer field. See the screenshot for your reference:

Let me guide you on how:

1. Go to Reports on the left side menu.
2. Enter Transaction List by Customer in the search field.
3. Tap Switch to Classic View.
4. Click the Customize button. 
5. Hit Filter and choose Customer. Then, select the name of the customer on the list. 
6. Press Run report.

Here's an article you can read to learn more about customizing your report: Customize reports in QuickBooks Online. After customizing the report, you can select the Save customization button to memorize it with its current customization settings. Feel free to check out this article for further details of the process: Memorize reports in QuickBooks Online.

Feel free to visit this reference if you want to export the report: Export report.

I'm just one reply away if you need further assistance or any clarification about running a report in QBO. I'm always here to provide extra information and help. You have a good one.