In my Renpy build section, there is Windows and Linux. I believe Tom have those there in case you only want a Windows build or only want a Linux build. When you open a PC zip, it has both an exe and sh (Windows and Linux executables).
I believe it would work fine on Linux because Tom builds, tests, and builds on a Linux machine. macOS, it is a hit and miss. So likely, you would only need PC to handle both Linux and Windows machines. :)