If you don’t have access to an acting school, can you still act in a movie or a tv show? Or do they ask for a certificate or something like that?
No, auditions are one place where you’ll never be asked for a certificate. Plenty of actors didn’t go to acting school and just started in modeling or commercials or just getting a headshot and resume together and auditioning right away. It’s just good to take classes at some point so you can approach any role and not have to always rely on just instinct and talent.