There is currently no official release date set for "Seriously Red." Since the movie is currently without a distributor, there is no way of knowing when it will debut in theaters, hit a streaming service, or be available on-demand (depending on where it ends up).
For those out there who are keen to check the film out, the good news is that, since filming has already been completed and is now in post-production, it may not be too long of a wait after the film secures a distributor. In years past, other complete films like "Book Club" and "Poms" were presented at AFM, secured a studio, and released by the May of the following year (via Deadline). So, there is a strong chance that audiences will be able to see the film by the late spring or early summer 2022. If the film is picked up by a streamer, the wait may be shorter.
The IMDb profile for "Seriously Red" lists a 2021 release date, but with no announcement made yet, the chances seem slim.