I'm generally somewhat skeptical of screenplay contests, especially those that have high entry fees. But Screencraft's first Public Domain Screenplay contest might just be worth a shot--if you've written an original film or TV script based on pre-existing stories in the public domain.
Public domain material either never was or is no longer protected by copyright. Examples include Bible stories, the novels of Charles Dickens, folk tales, fairy tales (original versions, not the Disney interpretations), myths, and (usually) books published before 1923.
The grand prize winner gets a $1000 cash prize and meetings with producers, development executives, literary managers, and agents.
The second place winner gets $500 in cash, plus introductions.
The top two also get a free copy of story-mapping software called HartChart (with which I'm not familiar) and the top ten finalists get a 50% discount on that software.
I suspect the competition will not be as intense for this contest as for others that have been going for years and are wide open in terms of stories. But you have to decide whether you want to spend $49 on the entry fee (or $118 if you want feedback on the script).
The early deadline is May 2, the final deadline is July 10, 2018. I wouldn't advise sitting down to write a script expressly for this contest, but if you already have one based on materials in the public domain, you might want to enter it.
You can find the list of judges and the full rules here: https://screencraft.org/publicdomain/?__s=yuaezsdqotjf7zwtufpj