Yes you do. You will receive a payment confirmation email that contains invoice information.
All of your receipts are also available inside of your RentPrep account. If you're logged into your account, you should see along the top navigation an option for 'Billing'
Click that option and then the option for 'My Invoices' will come up.
If your tenant want's a copy of the receipt for the background check you can forwarded them your email.