"Prepare a typescript" could be rephrased in many different ways, depending on the context and purpose of the task. Some alternative phrases might include "compose a script," "draft a screenplay," "write a manuscript," "create a written draft," or "formulate a typed document." Other possible synonyms might include "craft a written work," "prepare a written draft," "compile a typeset copy," or "author a text." Ultimately, the best synonym will depend on the specific circumstances in which the task is being performed, but these options offer a range of alternative ways to express the same essential idea.