There are two ways to find out how much a specific customer owes
Open the information in the Customer Center.
To do this task
Click Customer Center.
Click the Customers & Jobs tab.
Select the customer in the list.
Look at the Balance Total column of the list.
For more details, go to the Show drop-down above the transaction list and choose
Create an open balance report.
Select the customer whose balance you want to review.
Click Open Balance on the right side of the window.