Running Mono source code on Visual Studio

I am working an code analysis of open source. I start from byte code up to the source code. I don’t use C#.
I download mono from GetHub, run Portobuild.exe, then I tried to build the solution. It gives me numbers of errors. most of them are missing type or namespace ( AudioStream, SharpXD, Topology…) how could I fix this errors please.
or If i can find the compiled source code with the exe files somewhere would be great.