I don't know if this works but if I were in the US I'd try it.
For Audience Members
How do I sign up to watch free films before they’re released in theaters? First, you need to live in the USA and have a valid email address and a working cellular telephone number that can receive a text message. All participants must also accept iScreeningRoom’s terms of Confidentiality and Non-Disclosure Agreement, and are required to fill out the post-screening survey after watching each film.