Unable to build project: Visual studio finds some files to be ReadOnly

You DEFINITELY must NOT have .vs, Binaries, Intermediate, Saved nor the .db or the .sln files in the repo.

Also you seem to also have the engine as a subfolder to the game… this will not work for entirely different reasons (UBT will have trouble finding your project), and of course, you have dozens of GB of auto-generated junk files that should not be in your repo.