Yes, we always recommend writers copyright their work with either WGA West or the
US Copyright Office before sending it out anywhere.
Here's a blog post from an entertainment lawyer we work with that you may find helpful:
How to Copyright a Script the Smart Way and Avoid 5 Legal Pitfalls
If you'd like one of the professional screenwriters in our team help you with your script, check out our range of script coverage services.
If you still need help, please contact us.