Starting with 3ds Max 2022, only the Python 3.7 interpreter is included with 3ds Max. Both the MAXScript Listener and Editor support Python 3, including autocomplete. CPython extension libraries are binary compatible with Python 3.7, and do not require recompilation. See { Python Extension Libraries }.
The Python 3 interpreter (python.exe) and supporting packages are located in [3ds Max Install]/Python37/.
Note: The Python 2 interpreter is still named
3dsmaxpy.exe, and is located in the 3ds Max root directory.