Can someone explain this code?

[tuxe_t (tuxe)]

Sorry for this weird request especially considering the fact that I’ve been scripting for many years but this is really confusing me. I found a tutorial for a global leaderboard and they game me this model and I’m so confused. This is the main script:

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local data = {}

game.Players.PlayerAdded:Connect(function(plr)
	local leaderstats = Instance.new("Folder", plr)
	leaderstats.Name = "leaderstats"
	
	local Diamonds = Instance.new("IntValue", leaderstats)
	Diamonds.Name = "Stars"
end)

local function addSuffix(number)
	number = tonumber(number)
	if number == 1 then return number  end
	local s = {"", "K", "M", "B", "T","Qd","Qn","Sx","Sp","O","N","D"}
	local n = 0
	while number >= 1000 do
		number = number / 10^3
		n = n + 1
	end
	local pfx = n >= #s and s[#s] or s[n + 1]
	number = n >= #s and number * 10^((n + 1 - #s) * 3) or math.floor(number * 10) / 10
	return number..pfx
end

local ds = game:GetService("DataStoreService")

local TapsODS = ds:GetOrderedDataStore("database")

local timeUntilReset = 5
local player

while wait(1) do


	timeUntilReset = timeUntilReset - 1

	script.Parent.Parent.ResetTime.Text = "Resetting in " .. timeUntilReset .. " seconds..."


	if timeUntilReset == 0 then

		timeUntilReset = 30


		for i, plr in pairs(game.Players:GetPlayers()) do
			
			--if plr.Name == "" or plr.Name == "" or plr.Name == "" or plr.Name == "" or plr.Name == "" then
				
			--else
			--	TapsODS:SetAsync(plr.UserId, plr.Values.Diamonds.Value)
				
			--end
			
			TapsODS:SetAsync(plr.UserId, plr.leaderstats.Stars.Value)
		end

		for i, leaderboardRank in pairs(script.Parent:GetChildren()) do

			if leaderboardRank.ClassName == "Frame" then
				leaderboardRank:Destroy()
			end
		end
		
		local success, errorMsg = pcall(function()

			local data = TapsODS:GetSortedAsync(false, 25, 1)
			local TapsPage = data:GetCurrentPage()
			
			for rankInLB, dataStored in ipairs(TapsPage) do


				local name = game.Players:GetNameFromUserIdAsync(tonumber(dataStored.key))
				local Taps = dataStored.value


				local template = script.Template:Clone()

				template.Name = name .. "Leaderboard"

				template.PlrName.Text = name

				template.Rank.Text = "#" .. rankInLB

				template.Taps.Text = addSuffix(tostring(dataStored.value))

				template.Parent = script.Parent
			end			
		end)
	end
end

I’m really confused about addSuffix function, and TapsODS stuff, any help is appreciated. Thanks

[wShadowRBLX (coatmol)]

addSuffix() just changes a number like 1000 to 1K
as for TapsODS its just an Ordered DataStore (find more about that here)