Hello there, @Lwcc. I'm here to ensure you can generate a Profit & Loss by Class report showing its data.

Before anything else, please know that the class tracking is only available in QuickBooks Online Plus and Advanced. Once you turn on the feature, you can assign classes to your transactions and pull up the Profit and Loss by Class report. 

I've attached a screenshot for visual reference. 

For the report to display accurate data, it's crucial that the transactions are assigned to a class and that the reporting period is selected accurately. 

Please note that the Profit and Loss report shows income and expenses only, so if the product and services are assigned to a liability account, the transaction will not appear in the report. You'll need to manually correct your product and services account. 

Additionally, you can pull up the Profit and Loss Detail report to see a detailed view of all your income and expenses transactions by class. 

See the attached screenshot for visual reference. 

Furthermore, you can print, email, and export the reports you've pulled up to save them for future reference.

Moreover, I'll add some articles that contain valuable insights and tips that can help you get the most out of the QuickBooks Online class tracking feature: 

• Manage classes in QuickBooks Online
• Track your transactions by class. 

Whenever you need my assistance regarding the profit and loss report and class tracking feature, I'm here to back you up.