https://visualstudio.microsoft.com/thank-you-downloading-visual-studio-mac
https://dotnet.microsoft.com/download
Download .NET Core SDK
test the installation, open terminal and test:
dotnet --version
If you are using Iterm, and the you may need to run
ln -s /usr/local/share/dotnet/dotnet /usr/local/bin/
to make dotnet
available.