I appreciate you taking the time to reach us back, StephanieJester.
Thanks for letting us know the all the troubleshooting steps you've taken and it's results. Since the issue continues to occur after performing the suggested steps, I recommend contacting our QuickBooks Care Support. They have the tools to check and further investigate the reason why you're unable to print estimates.
You can reach them through this link: QuickBooks Care Support.
Get back to me if you have additional questions. I'll be around to answer them all for you. Keep safe and have a nice day ahead!