How do you add a GUI which shows certain values next to a person's name?

Im trying to make a RPG game based on the player living in a small town after his home =land is destroyed. My problem is, is that I need a script which can hide objects from players who have touched it AND add somehow, add a point to a GUI near the top of the screen. With also an ingame currency in coins and gems. How do I go about this? Can all who know how to do this, make a script to go with these locals? :

local Step1 = game.Workspace.Step1
local Step2 = game.Workspace.Step2
local Step3 = game.Workspace.Step3

function Step1hit(hit)
    print("Step1 was Hit!")
    print ("Something Hit Me!") 

    if hit.Parent:FindFirstChild("Humanoid")then
        print("A Player Hit Me!")

    end
end

Step1.touched:connect(Step1hit)

I have only started the first section, I am expirencing difficulty with scripting as it is my first time trying. And if there is any errors in this set of script, tell me pls. and rewrite it correctly.