"make me a shop gui that uses "Cash" as the currency. Give instructions on how to implement this, make sure to use a serverstorage folder named "Tools" and each tool in there automatically adds to the gui for me! and use an "IntValue" for the cost!"

To create a shop GUI that uses "Cash" as the currency, follow these steps:

1. Create a new ScreenGui in the StarterGui folder and name it "ShopGui".
2. Inside the ShopGui, create a Frame and name it "ShopFrame". Customize the size and position as you like.
3. Inside the ShopFrame, create a TextLabel and name it "Title". Set the text to "Shop" and customize the size and position.
4. Inside the ShopFrame, create a UIGridLayout and customize the CellSize and CellPadding as needed.

Now, let's create the script to populate the ShopFrame with the tools from the ServerStorage folder named "Tools".

1. Inside the ShopGui, create a new LocalScript and insert the following code:

```lua
local Players = game:GetService("Players")
local ServerStorage = game:GetService("ServerStorage")

local player = Players.LocalPlayer
local playerGui = player:WaitForChild("PlayerGui")
local shopGui = playerGui:WaitForChild("ShopGui")
local shopFrame = shopGui:WaitForChild("ShopFrame")

local toolsFolder = ServerStorage:WaitForChild("Tools")

for _, tool in ipairs(toolsFolder:GetChildren()) do
    if tool:IsA("Tool") then
        local cost = tool:FindFirstChild("IntValue")
        if cost then
            local itemButton = Instance.new("TextButton")
            itemButton.Name = tool.Name
            itemButton.Text = tool.Name .. " - " .. cost.Value .. " Cash"
            itemButton.Parent = shopFrame

itemButton.MouseButton1Click:Connect(function()
                game.ReplicatedStorage.BuyTool:FireServer(tool.Name)
            end)
        end
    end
end
```

This script will populate the ShopFrame with buttons for each tool in the "Tools" folder, and display their cost in Cash.

Next, let's create a server script to handle the purchasing of tools.

1. Inside the ReplicatedStorage folder, create a new RemoteEvent and name it "BuyTool".
2. Inside the ServerScriptService folder, create a new Script and insert the following code:

```lua
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ServerStorage = game:GetService("ServerStorage")
local Players = game:GetService("Players")

local buyToolEvent = ReplicatedStorage:WaitForChild("BuyTool")
local toolsFolder = ServerStorage:WaitForChild("Tools")

buyToolEvent.OnServerEvent:Connect(function(player, toolName)
    local tool = toolsFolder:FindFirstChild(toolName)
    if tool then
        local cost = tool:FindFirstChild("IntValue")
        if cost then
            local playerCash = player.leaderstats.Cash.Value
            if playerCash >= cost.Value then
                player.leaderstats.Cash.Value = playerCash - cost.Value
                local toolCopy = tool:Clone()
                toolCopy.Parent = player.Backpack
            end
        end
    end
end)
```

This script will handle the purchasing of tools by subtracting the cost from the player's Cash and adding the tool to their backpack.

Now you have a working shop GUI that uses "Cash" as the currency and automatically adds tools from the "Tools" folder in ServerStorage. Make sure to create the necessary folders and values in the workspace, and replace any placeholder names with the appropriate names for your game.