Gui Script

Hey GG community you have all been helping me out so much and i appreciate that so much.So i ask for more scripting help today.I need a scrpt where a datablock defines a hud like a human will have a normal hud and a robot will have a futuristic one.Also i want to have a hud to be locked until you reach a specific level.I understand this might be hard to create but please try the best you can.
Michael