After updating I came to a point I could not access my MacBook since it’s under remote management

I bought a MacBook off a friend 2 years ago and used it for a while and after updating I came to a point I could not access it since it’s under remote management for a school which I’ve contacted and they said they can’t do anything about it and cannot linger proceed from this screen since the school won’t configure the MacBook

[Re-Titled by Moderator]