Why doesnt this only work on studio but nothing else?

I'm trying to make it so when you touch a gold coin you'll get 25 points/coins. But it only works on studio. Help me please, also give me tips with scripting things for studio and outside of studio.

children = game.Workspace.Coins:GetChildren()
while true do
    for _, child in ipairs(children) do
        if child.Name == "GoldCoin" then
            child.Touched:connect(function(Touched)
            local p = Touched.Parent:FindFirstChild("Humanoid")
            if p ~= nil then
            local player = game.Players:GetPlayerFromCharacter(Touched.Parent)
            player.leaderstats.Coins.Value = player.leaderstats.Coins.Value + 25
            Sound = script.CoinSound:Clone()
            Sound.Parent = child
            Sound:Play()
            game.Debris:AddItem(Sound, 7)
            child:remove()
            end         
            end)
        end
    end
    wait()
end