How to make a script that gives you money if you click someone of the criminals team?

You can use the UserInputService.InputBegan event to collect user input, and process it like so:

local Services = {
    UserInput = game:GetService("UserInputService")
}

local function OnUserInputBegan(InputObject, GameProcessedEvent)
    if GameProcessedEvent then
        return
    end

    if InputObject.UserInputType ~= Enum.UserInputType.MouseButton1 then
        return
    end

    -- Code here!
end

Services.UserInput.InputBegan:Connect(OnUserInputBegan)

Next, you'd want to get the player that the user is clicking on. You can accomplish this by using the old and outdated PlayerMouse API via Player:GetMouse(), and accessing PlayerMouse.Target, or, alternatively, casting a ray from the Camera's 3D point in the direction of the mouse (you can access positional mouse information via InputObject in our example.