Do I get a report from Jotform or Paypal or both when someone makes a purchase?

You can get an email notification from JotForm when someone purchases and submits via your JotForm.

Here is how you can set up a notification email on your form: https://www.jotform.com/help/25-setting-up-email-notifications

Also, it is possible to get emails from PayPal too for every payment. Please check your PayPal account.