Is there a way to get a report showing a product on open estimates?

Thank you for reaching out to the QuickBooks Community, mhandlon. That's an excellent question! The report to show a product in the estimate is unavailable. You'll have to open the estimate manually in the Estimates & Progress Invoicing Summary by Customer report. You can refer to this article for future reference on how to customize reports in QuickBooks Online. However, I will take note of this and pass this along to our Product Developers. They are always looking for ways to improve the system. You can keep in touch with the latest updates or upgrades by following our QuickBooks Blog. If you have any questions or concerns, please don't hesitate to reach out to us. We are here for you!