Hi there,
Welcome to the QuickBooks family! It's good to know the difference among the tax codes you've mentioned above. I'll be happy to steer you on the right path by providing the information you need to move forward.
Inclusive of tax means that the chosen transaction will have the applicable tax rates included. Out of scope pertains to non-taxable goods and services with a rate of 0% in QuickBooks. I recommend consulting with your accountant to learn more about the best tax codes to use for your business. Otherwise, you're more than welcome to ask other questions below or reference the following article with more info about: Common sales tax codes.
Let me know if this info helps by leaving a comment below. I'll be a message away.