I suggest the Sales by Customer Detail report. This will give us all the invoices with the product/service including the quantity. You can follow these steps:
From the Reports tab, search and select Sales by Customer Detail.
Make sure the Report period is correct.
Click Run report.
In addition, this report will show us the invoice number for your reference, sales price and the total amount. You can also include the status whether it's paid or not by checking the A/R Paid. Just make sure that the report is set to Accrual basis. You can locate this option in the small gear icon beside the export button.
I've also included these articles for your more details about reporting: