1994 Patrol Taillight

Hi there everyone,
Any advice would be welcomed.
I am a Mum and have removed my son's taillight to replace the brake light globe.
The issue I am facing is that the globe I need to replace is in a sealed section....I think.
How do I access this bit without breaking things.
Thank you in advance.
Norma

As far as I am aware they are not sealed. Can you post a pic of it?

Is there a round plastic bit with wires running into it Norma? Try twisting that to the left and see if it unscrews/pops out. The light globe is usually attached to that bit that comes out of the brake light fitting.