Once your Job has been sent to Quickbooks and it has a QB Customer List ID and a QB Job List ID, you can hit Get Job Details from QB to retrieve all billing and payment information on the job.
The Information will populate on the Sale Amount and Collected Amount fields, though you can click the button shown below to get a breakdown of what was brought in from the job in Quickbooks:
Here you will be able to see any Invoices, Payments, Credit Memos, and the Profit and Loss Report: