How to make a more efficient script?

while true do
    wait()
for i,v in pairs(script.Parent:GetChildren()) do
   if v.ClassName == "Text Button" then
   v.EffectLabel.Text = script.Parent.Text

   v.NameLabel.Text = v.nameValue.Value
   v.NameLabel.EffectLabel.Text = v.nameValue.Value

    v.CostLabel.Text = "["..v.costValue.Value.." points]"
        if v.costValue.Value == 0 then
            v.CostLabel.Text = "[free]"
        end
    v.CostLabel.EffectLabel.Text = v.CostLabel.Text

    if game.Players.LocalPlayer.leaderstats.Points.Value >= v.costValue.Value then
        v.CostLabel.TextColor3 = Color3.new(1,1,127/255) --has enough to purchase
    else 
        v.CostLabel.TextColor3 = Color3.new(1,100/255,100/255) --does not have enough to purchase
end
    end
	end
end

Basically what

for i,v in pairs(script.Parent:GetChildren()) do
end

does is it classifies everything inside of script.Parent as V so you can make changes to everything at once.

if v.ClassName == "Text Button" then

Makes it so that it only changes text buttons (I'm assuming that's what you're using as buttons, if not change that classname to whatever it is, otherwise it won't work) without that, if you have anything in the Frame besides what you want the script to edit (even the script itself) then the script will break.

If it doesn't work, comment and tell me if there are any errors in the output. I'll try to fix it.