You can run the Transaction List by Customer report to show the invoices and its' payment. Let me guide you with the steps.
- Click Reports at the top.
- Select Customers & Receivables, and then choose Transaction List by Customer.
- Under the Num column, it will show the invoice numbers.
Once done, you can open the payment transactions to view more details.
I have attached screenshots for your visual guide.
I have also included this link for your future references: Reports.
Keep me posted if there's anything else you need. I'm right here to help.