If you do not going to modified the Plugin, just put it inside “Engine/Plugins/FMOD” folder of your Source engine code, run GenerateProjectFiles.bat to generate all needed files and Compile the engine as Installed Build so you can distribute to your friends.
To make an Install build of the engine open a windows cmd.exe
go to the root folder of the engine source where Setup.bat is located.
Write this command.
Engine\Build\BatchFiles\RunUAT.bat BuildGraph -target="Make Installed Build Win64" -script=Engine/Build/InstalledEngineBuild.xml -set:HostPlatformOnly=true -set:WithAndroid=true -set:GameConfigurations=Development;Shipping;Debug -set:BuiltDirectory="D:/UE5.3/"
The final product when it finish will be in D:/UE5.3/Windows.
This will build the Editor for Windows64 and the binaries to package for Android x64 and Windows64.