A step by step training on how to submit an Unity3d game to the Mac App Store including answers to the following questions:
How to setup an Apple certificate? How to setup a Mac provisioning profile? How to build an Unity3d Mac game and sign it? How to verify your Unity3d game before submitting? How to use the Application Loader to submit your Unity3d Mac game?
The SignGame.sh script used in this video to sign the Unity3d build can be found in this GitHub repository: https://github.com/dilmerv/UnityBuildTools