subtracting intValue on pickup?

You would have to do the picking up part but here's a solution.

When a player has enough points he can pick it up and it subtracts it but the part will delete so you have to figure out that for yourself.

Leaderstats Script:

local Players = game:GetService("Players")

Players.PlayerAdded:Connect(function(player)

    local leaderstats = Instance.new("Folder", player)
    leaderstats.Name = "leaderstats"

    local IntValStat = Instance.new("IntValue", leaderstats)
    IntValStat.Name = "IntValStat"
    IntValStat.Value = 500 -- The value of your intstat by default
end)

Script in part:

-- Script in the part
-- Normal Script


local clickdetector = script.Parent.ClickDetector
local part = script.Parent

clickdetector.MouseClick:Connect(function(player)

    if player.leaderstats.IntValStat.Value >= 100 then -- if the player has 100 or more "points" then he gets to pick it up
        print("Player has enough money!")

        player.leaderstats.IntValStat.Value = player.leaderstats.IntValStat.Value - 100 -- Subtracts the points
        part:Destroy()
    else
        print("Player does not have enough money!")
    end

end)