Can someone figure out the error in my data store script?

I have my leaderboard properly made. I need it to save using data stores, but my script isn't working.

datastore = game:GetService("DataStoreService"):GetDataStore("Growth")

game.Players.PlayerAdded:connect(function(player)
    player:WaitForDataReady()
    wait(1)
    local stats = player:FindFirstChild("leaderstats").Growth.Value
    stats = datastore:GetAsync(player.UserId)
end)

for i,v in pairs(game.Players:GetChildren()) do
    for x,c in pairs(v:FindFirstChild("leaderstats")) do
        for a,b in pairs(c:FindFirstChild("Growth")) do
            b.Changed:connect(function()
                datastore:SetAsync(v.UserId, b.Value)
            end)
        end
    end
end