Why doesn't gihub have UnrealBuildTool.exe?

I have stumbled for weeks on the dedicated server and I got frustrated when I didn’t have the configuration settings “Development Server” “Development Client” “Shipping Server” and so on. So I manually made new configuration settings but when ever I used them they gave me (literally)hundreds of errors about not able to find specific path. So I looked on different forums and found out that they solved it by switching the version to the source. I did that then gave me the error “Missing C:/Users/tjsun/Documents/Unreal Projects/Engine/Binaries/DotNET/UnrealBuildTool.exe after build”. I check the path it gave me to find out that there was no “UnrealBuildTool.exe” I checked the GitHub to get just the “UnrealBuildTool.exe” but I searched the file and it wasn’t there, but switching to 4.16 still works. Is there another way to get the configurations? If anyone could help me I would greatly appreciate it.

ok :{)!!!