My game isn't saving data, how can I fix this critical issue?

I have a datastore that is supposed to save the points of the player, for some reason, it doesn't work and because it is wrapped in a pcall, it does not send an error to fix.

Here the points script: (Works)

game.Players.PlayerAdded:connect(function(plr)


    local ls = plr:WaitForChild("leaderstats")

    local rank = Instance.new("IntValue",ls)
    rank.Name = "Points"
    rank.Value = 0
while true do
    rank.Value = rank.Value + 5
    wait(5)
end
end)

Here is the data script: (Does not work)

local dataStores = game:GetService("DataStoreService"):GetDataStore("ExtolDataStore")
local players = 0

game.Players.PlayerAdded:connect(function(plr)
    players = players + 1

    local points = plr:WaitForChild("leaderstats"):WaitForChild("Points").Value


    local player_data

pcall(function()
     player_data = dataStores:GetAsync("user_"..plr.UserId,points)
end)

if player_data ~= nil then
    points = player_data else
    points = 0
end

end)


local bindableEvent = Instance.new("BindableEvent")

game.Players.PlayerRemoving:connect(function(plr)
    local points = plr:WaitForChild("leaderstats"):WaitForChild("Points").Value

    pcall(function()
        dataStores:SetAsync("user_"..plr.UserId,points)
        print("Saved "..plr.Name.."'s Data")
        players = players - 1
        bindableEvent:Fire()
    end)

    game:BindToClose(function()
    while players > 0 do
        bindableEvent.Event:Wait()
    end
    end)
end)

Thank you to anyone who can help.