Hello @risa1,
QuickBooks will enter 1 in the Quantity column when creating a sales transaction. Since reports won't recognize a blank quantity, it'll enter 1 as the current value. As a workaround, you can enter a 0 quantity of your sales transaction.
In case you need some ideas in managing your sales and customer transaction, you can visit this helpful article for reference: Income and Expenses.
Please touch base with me here for all of your QuickBooks needs, I'm always happy to help. Thanks for dropping by.