How to download 5.1 from GitHub?

One last Newby question. How may I hook up the GitHub 5.1 release to the Epic Launcher?

  1. I did a search in the folder structure, there is no EXE in the GitHub download.

2.There is no installer.

  1. Is there a way to point the Epic Launcher to the GitHub 5.1 download?

I’m new to UE, I’m grateful for all your help.