I’m glad to share some information with you, @dax2121.
The number of computers on which you can install QuickBooks depends on the terms of your license.
You can reach out to our Customer Care team. They have tools that can check the total number of QuickBooks desktop installs based on your license.
I have here a document that contains information concerning the QuickBooks Desktop software license agreement. You can read them to help you learn more.
Keep in touch with me if you have other concerns about installs. I'll be here. Have a good day!