Hi @bbksCT,
Welcome to the Community. Allow me to chime in and share additional details about the trial version of QuickBooks Desktop.
You don't need to enter any codes to access the QuickBooks free trial. Just make sure to download it through the correct link to expedite the validation of the license.
Also, I recommend downloading QuickBooks Enterprise to test out more features. You can follow the detailed steps in this link: Download a trial of QuickBooks Desktop Enterprise.
For additional reference, I've attached an article you can use as a guide in navigating QuickBooks Desktop: Get started with QuickBooks Desktop.
Please don't hesitate to leave a comment if you need additional guidance in installing the trial. I'd be more than happy to help.
