A formal education isn’t necessary, but film and music schools will provide an opportunity to learn equipment and software and to foster relationships with like-minded people that often have a long-lasting career impact–it’s a very relational job.
There are a lot of non-degree courses in sound recording and media creation that will give you some valuable skill sets. Nowadays there are a ton of free and low-cost courses and training available online and on YouTube, Vimeo, etc.