As of the moment, we're unable to retrieve the actual paycheck or any data in your QuickBooks once you've deleted them.
But don't worry, you can review the details of your deleted paycheck from your Audit Log report so that you can recreate it. To do so:
Lastly, I've also added this helpful article that'll guide you in case you'll want to print your paychecks: Set up and Print Payroll Paychecks and Pay Stubs.
If there's anything else that I can help you with, please let m know in the comment section down below. I'll be always around ready to help.