Why do we have to wait on an update, is there no way ichigos could just automatically update like uploading a video to youtube when a person submits a sheet?

Quality control.

Yeah, but if I'm correct, ichigos takes longer than a month for an update, that's a long time to wait for new sheets. Why not weekly updates? Not enough time?

The guy who owns Ichigo's is a busy old fart who has far more important things to do than to check sheet music everyday.