There is no magic number for the number of scene descriptions, dialogue, and scenes that need to be within a script. Expectations and guidelines are always applicable for some reasons. But in the last, all that matters is that you keep a general awareness that less is more. You must know many screenplays, and one of the best is vampire's kiss by joseph minion. With this, you can know fewer scenes and pages. There is more likely your script is a tight draft that becomes a real turner for the reader.
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