Apple will not tell you, and others should know after years of the experience. Like this very moment, I have submitted 3 builds and they show up briefly in testflight only to disappear entirely minutes after. No processing or status. They're gone. But they're not. Apple is behind, it's a holiday, or your app was flagged for a reason you'll never know until you do. Likely the first one. No helpful error. No assistance to developers. Just that it will be there. Eventually. Maybe. I've had it take days before. Search and others are 10 builds later scratching their heads. All my App Center says is 100% success uploading, but a timeout asking Apple if it is in the list of available builds. So it fails. Can only wait and are beholdandt to Apple all mighty. Amen, or other