when I turn on my virtual boy one eye is broken but works sometimes but is dead most of the time and if I do get the right eye to work it will usually shut off after a few minutes. Does anyone know why it’s doing this?

Sounds like the usual ribbon cable problem where the glue to that eye has come unstuck.

What is the best place to send it to for repair?

I’m not too sure. I’d say check on the Discord https://www.virtual-boy.com/discord as there’s a dedicated repairs channel on there.