|You should be able to open it with Word and save it as a .doc.|
If your system doesn't default to opening rtf files with Word, right-click, choose Open With and choose Word.
I would try 1 page before I tried 200. You may not like the formatting or something and it would be better to know right away before you spend all that time.
I can't say that I have ever been able to scan a entire document into Word and have it come out looking exactly like the original, especially if there is formatting like tabs, columns, italics, etc.
I imagine a screenplay would have a lot of that.