Is there any monk capable to help me here?

Ooooo ... Win32::CLR requires Visual C++ 2005 or later, and a perl that has been built using that compiler.
There's plenty of monks working with perl on Windows, but not with Visual C++ 2005 or later.
The fact that the module has not been updated in over 10 years is also a little worrying.

If you have "Visual C++ 2005 or later", I would suggest that you start by building perl-5.28.x from source with that compiler. (I, and probably others, could help you if you strike difficulty with that.)
Then, build and install Win32::CLR on that perl, and see how it goes from there.

I don't think it's worth trying with perls that have been built with mingw ports of gcc.

Cheers,
Rob