leaderboard not saving data?

I made a leaderboard that is supposed to save the player's data but this error keeps popping out and yes I checked the little box to enable API Services.

Output Error: "ServerScriptService.Leaderboard:17: attempt to index global 'data' (a nil value)"

local dataStoreService = game:GetService("DataStoreService")
local dataStore = dataStoreService:GetDataStore("Currency")

game.Players.PlayerAdded:Connect(function(player)
    local leaderboard = Instance.new("Folder",player)
    leaderboard.Name = "Leaderboard"

    local cash = Instance.new("IntValue",leaderboard)
    cash.Name = "Cash"
    cash.Value = 10

    local recieved,failed = pcall(function()
        local data = dataStore:GetAsync("User-"..player.UserId)
    end)

    if recieved then
        cash.Value = data[1]
        print("Data was received")
    else
        print("Data was not received")  
    end

    while true do wait(30)
        dataStore:GetAsync("User-"..player.UserId{cash.Value})
    end
end)

game.Players.PlayerRemoving:Connect(function(player)
    local leaderboard = player.Leaderboard
    local cash = leaderboard.Cash

    local saved,failed = pcall(function()
        dataStore:SetAsync("User-"..player.UserId{cash.Value})
    end)

    if saved then
        print("Data was saved")
    else
        print("Data was not saved")
    end
end)

Some assistance would be helpful if anyone knows how to fix this kind of problems.