I can only find downloads back to version 10 online.
You might have to contact your local Archicad distributor.
Or find someone local that has been using Archicad (MAC version) for some time and may still have the installation discs laying around.
The problem is this software is almost 20 years old now and I don't think it was ever delivered digitally.
So finding someone with the installation discs may be your only hope.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11