Can I get help with loadout?

Hello, I have a loadout GUI that I need to setup so when going through the weapons it'll say locked or unlocked, an make the weapons buyable with leaderboard credits, an cycle through the weapons as you click an arrow to choose your weapons, an my equip button will be the button that gives you the weapon, this is all I have currently.

local currentGun = script.Parent.Background:WaitForChild("CurrentGun")
local equippedGun = script.Parent.Background:WaitForChild("EquippedGun")
local eqGun = equippedGun:WaitForChild("EGun")
local cuGun = currentGun:WaitForChild("CGun")
local v = currentGun:WaitForChild("GunNumber")
while true do
    wait(.1)
    if v.Value == 0 then
        cuGun.Value = "Gun1"
    elseif v.Value == 1 then
        cuGun.Value = "Gun2"
    elseif v.Value == 2 then
        cuGun.Value = "Gun3"
    elseif v.Value == 3 then
        cuGun.Value = "Gun4"
    end
    equippedGun.Text = "Equipped: " .. eqGun.Value
    if currentGun.Owned.Value == false then
        currentGun.Text = cuGun.Value .. " [Locked]"
    elseif currentGun.Owned.Value == true then
        currentGun.Text = cuGun.Value .. " [Unlocked]"
    end
end