Done this kinda thing before?
Volte is a self-contained, single-file .NET Core 3.1 application, that takes no command-line arguments, so a startup script isn't necessary.
Need some help?
Since you're on Windows, all you have to do is double-click the executable (Volte.exe).
Since you're on Linux, the execution is a little more involved, and you'll need a terminal (which you probably have).
Once you're in a terminal session, simply run
./Volte. Note that this will fail if the user you're logged in as does not have execute (X) file permissions.