Thanks for visiting the Community, study-caddubai-c.
You can customize and filter the reporting period of the A/R Aging Detail report in QuickBooks Online to view the unpaid balances of your customers . I'll show you how to do it:
Go to the Reports menu.
Under Who owes you, choose Accounts receivable aging detail.
Select the Customize button,
Click the Report Period drop-down menu, then pick a period or manually set the date.
Set the appropriate aging method, then hit Run report.
Drop me a comment below if you need more help in running your other company reports. I'll be more than happy to assist you again.