Visual Studio Build tools are a different download than the IDE

click here and download the setup vs_buildtools

https://aka.ms/vs/15/release/vs_buildtools.exe

Go in command line shell and write

vs_buildtools.exe --add Microsoft.VisualStudio.Workload.MSBuildTools

After installation is completed, you will have a new msbuild

C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\MSBuild.exe

Try yourlsef, go in the shell and write

C:\>"C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\MSBuild.exe"

You have as result:

Microsoft (R) Build Engine versione 15.3.409.57025 per .NET Framework
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