Hi there, @billhdz.

The compatible software for QuickBooks Desktop (QBDT) MAC depends on what version you're using.

If you're using QBDT for Mac 2019, the supported software would be at least Mac OS X v10.12 (Sierra), v10.14 (Mojave), and v10.13 (High Sierra).

For QuickBooks Mac Plus 2022, the system requirements for its operating system is at least Mac OS X v11.3 (Big Sur) or later. 

To get more details, you can check out this article: System requirements for QuickBooks Mac Plus 2022.

You may also refer to this link if you need further assistance when installing and setting up QBDT for Mac: Install and set up QuickBooks Mac Desktop.

In addition, you may check our QBDT Mac articles for your future reference: Help articles for QuickBooks Desktop for Mac.

Just add a post/comment below if you have any other questions about installing QuickBooks, I'll be right here to help you however I can. Have a good day ahead!