with viewport3d it works on a TForm,while with an error TForm3D.
version delphi 10.3.2 .
With delphi 10.3.1 on osx 32 it is work.
version delphi 10.3.2 not work
But it works for you or not, putting a simple Tform3D on OSX32?
My test is 26.0.34749.6593 trial version.It is sure that this delphi program works, I would not buy it and then problems about problems.However the version you download from the embarcadero site does not work with TForm3D on OSX.That's for sure.
The problem was the virtualization of OSX64 with Tform3d.Without the virtualisation of OSX, everything works.