Counted scripts are by no means a foolproof plan (I use a score 90% of the time, but sometimes it's just dumb to have a huge score for a small musical) If you are new, learning, or not comfortable counts may be easier, I don't mean pages and pages of them if it gets to that you just have to use the score, or a combination of the two. Two prevent being lost I use musical notation to help me find things in the music that are easily recognizable to anyone, music changes, instrument cues, blocking etc. Once again, not claiming this is at all better system but something that works in a pinch.