Good day, info1069.
While the option to use barcode for inventory is currently unavailable in QuickBooks Online, you'll want to search for a third-party app that allows you to use barcode and can integrate with QuickBooks.
In the meantime, I'd suggest visiting our blog site so you'll be able to get the latest news about QuickBooks and what our Product Care Team is working on.
Additionally, to help you with managing your inventory items, check out this article: Set up and track your inventory in QuickBooks Online. On the same link, you'll find what report to pull up to see your best sellers.
It's my priority that all of your concerns be addressed, so please let me know if there's anything else you need. Have a fantastic day!
