I think you've stumbled on the installer issue that I thought was solved, but perhaps not. If the native Macintel version of Archicad is available as a student download, this should not happen.
What you have is the MacPPC version (which, sucessfully installed, runs fine in Rosetta emulation on the Macintels). There is/was however an installer issue in the PPC download. The PPC
installer
doesn't work on these machines.
I think people have had to resolve it by simply copying a complete working installation from a PPC machine onto the Macintel. This works.
But better still is of course to install the native Macintel version when it is available as a student download. If it isn't now, it surely will be.
AC4.1-AC26SWE; MacOS13.5.1; MP5,1+MBP16,1