As a first try you should let the Slicer super build build all the dependencies it wants including the python version which becomes an embedded python in the application. It will have to build an x86_64 python for use in this x86_64 application.
The following linked post was a good one that helped me build an x86_64 build on arm mac successfully.
The Slicer factory build machine builds successfully on macOS with the following environment: