It says you can "Receive 10 payments". What exactly does that refer to?

In your bronze pricing, it says you can "Receive 10 payments".  What exactly does that refer to???

I believe you're referring to the Payment Submission.  If the form has a payment processor integrated and it was submitted then that will count as a Payment Submission. Here's an example on how to create an Order form with payment field: https://www.jotform.com/help/165-Setting-Up-Your-First-Order-Form

If you want to know more about account usage and limits, please visit this link: https://www.jotform.com/help/408-Understanding-Your-Account-Usage-and-Limits