Someone Only Worsened my Problem in moving variables Help please?

So earlier I asked this question:

Ok so, I have this script that makes a leader board:

game.Players.PlayerAdded:connect(function(plr)
    local stats = Instance.new("IntValue", plr)
    stats.Name = "leaderstats"
    local points = Instance.new("IntValue",stats)
    points.Name = "Copper"
    points.Value = 0
end)

I then want to make a button that when you click it you get 1 copper: here it is:

function onClicked(playerWhoClicked)
    script.Parent.BrickColor = BrickColor.DarkGray()
    wait(6)
    points.Value = +1
    script.Parent.BrickColor = BrickColor.new("Reddish brown")
end

script.Parent.ClickDetector.MouseClick:connect(onClicked)

Upon starting it gave me the error of: ServerScriptService.Script:2: attempt to index global 'points' (a nil value) I think this is because the variable from my fist scrip is a local and not a global therefore I cannot transfer it, all this caused the block to be un-clickable upon removing the local from that scrip it has no visible change, the button was still un-clickable Please help!

P.s if you find any other errors in my coding please notify me!

A person then responded with this: You get the playerWhoClicked, now find the value inside them and change it.

function onClicked(playerWhoClicked)
    script.Parent.BrickColor = BrickColor.DarkGray()
    wait(5)
    local points = playerWhoClicked.leaderstats.points
    points.Value = points.Value+1
    script.Parent.BrickColor = BrickColor.new("Reddish brown")
end

script.Parent.ClickDetector.MouseClick:connect(onClicked)

this only worsened my problem, now whenever I try to get my ore it gives me the error: "points is not a valid member of IntValue" every 5 seconds, I am simply asking someone to try and solve it because noone usually looks on already respended to pages.