DataStore doesn't work and leaderstats and It doesn't spawn the "model", Why?

I got a big problem because my DataStore doesn't work and leaderstats doesn't work and I would like some help

Images for where is my stuff:

Biomes folder is in workspace: https://gyazo.com/4d4e99a072148068ef3eed78e09801f5 _ Other: https://gyazo.com/76fb3959c087032beafe3e78b8014a77

ServerScriptService Script:

local Players = game:GetService("Players")

local RS = game:GetService("ReplicatedStorage")

local SS = game:GetService("ServerStorage")

local DSS = game:GetService("DataStoreService")

local RunService = game:GetService("RunService")

local ReplicatedModules = RS:WaitForChild("Modules")

local InsCreator = require(ReplicatedModules.InstanceCreator)

local DataStore = DSS:GetDataStore("Test")

function GetRandomCFrame(Part,NewPart)
	local X, Z = Part.Size.X/2,Part.Size.Z/2
	local RX,RZ = math.random(-X,X),math.random(-Z,Z)
	return Part.CFrame * CFrame.new(RX, {Part.Position.Y + NewPart.Size.Y + 0.3},RZ)
end

local function PlayerAdded(plr)
	local leaderstats = InsCreator.create("Folder", {Name = "leaderstats", Parent = plr})
	local Tubes = InsCreator.create("IntValue", {Name = "Tubes", Value = 0})
	local CURP = InsCreator.create("StringValue", {Name = "CURP", Value = 0})
	local Rebirths = InsCreator.create("StringValue", {Name = "Rebirths", Value = 0})
	
	local key = string.format("$s's data",plr.UserId)
	
	local success, err = pcall(function()
		local save = DataStore:GetAsync(key)
		if save then
			Tubes.Value = save[1]
			CURP.Value = save[2]
			Rebirths.Value = save[3]
		end
	end)
		if success then
			print(string.format("loaded $s's data",plr.Name))
	elseif err then
				warn(err)
		end
	leaderstats.Parent = plr
	Tubes.Parent = leaderstats
	CURP.Parent = leaderstats
	Rebirths.Parent = leaderstats
	
	
end

local function PlayerRemoving(plr)
	local key = string.format("$s's data",plr.UserId)
	local ls = plr.leaderstats
	local success, err = pcall(function()
		DataStore:SetAsync(key,{ls.Tubes.Value, ls.CURP.Value, ls.Rebirths.Value})
		end)
			
		if success then
			print(string.format("saved $s's data",plr.Name))
	elseif err then
				warn(err)
		end
	
end

for a, biome in pairs(workspace:WaitForChild("Biomes"):GetChildren()) do
	spawn(function()
		RunService.Heartbeat:Connect(function()
 			for i, tube in pairs(biome.Settings.Tubes:GetChildren()) do
				tube.CFrame = tube.CFrame * CFrame.fromEulerAnglesXYZ(0.02,0.02,0.02)
				
				end
			end)
		end)
			while true do
				if biome.Settings.MaxTubes.Value > #biome.Tubes:GetChildren() then
					local TubesToClone = biome.Settings.Tubes:Getchildren()
					local SelectedTubes = TubesToClone[math.random(1,#TubesToClone)]
					local NewTube = SS.Prefabs:FindFirstChild(SelectedTubes.Name):Clone()
					local Amount = math.random(math.floor(NewTube.Value.Value/1.25),math.floor(NewTube.Value.Value*1.25))
					NewTube.CFrame = GetRandomCFrame(biome.Baseplate,NewTube)
					NewTube:WaitForChild("TubeValueGUI").Value.Text = Amount
					NewTube.Parent = biome.Tubes
				end	
				
	end
end
	
	
	
Players.PlayerAdded:Connect(PlayerAdded)
Players.PlayerRemoving:Connect(PlayerRemoving)

Module script in replicatedstorage:

local InstanceCreator = {}

function InstanceCreator.create(class,properties)
	local newItem = {}
	newItem = Instance.new(class)
	for i, v in pairs(properties) do
		newItem[i] = v
	end
	return newItem
end

return InstanceCreator

Please help, thanks!

leaderstats don't work because you didn't put the parent of the values in the module script and also the string.format format is not

local key = string.format("$s's data",plr.UserId)

its actually this:

local key = string.format("%c's data",plr.UserId)