Hello there, topher.
I'll share some details about generating a report that shows the total number of orders and total revenue for those orders, separated by class in QuickBooks Desktop (QBDT).
I understand that having these details on a report is beneficial to your business. However, there's no specific report that will show the total number of orders and total revenue for those orders in a given period that breaks down totals by class.
As a workaround, you can pull up two different reports, like the Open Sales Order by Item report to show the total item invoiced and to show the total revenues, you can pull up the Sales report by Item details and filter it by class. Then, export the reports to Excel and filter them from there. See this link for guidance in exporting the reports: Export reports as Excel workbooks in QuickBooks Desktop.
I'm leaving this article for future reference in personalizing reports in QuickBooks: Customize reports in QuickBooks Desktop.
Tag me in this thread if you have follow-up queries about managing sales reports in QuickBooks. I'm always here to help you.