Why won't the number in a value increase?

I'm making an advanced game and everything is ok apart from this script. The number called game.ReplicatedStorage.Values.PlayerCount is not increasing in the script, so the game is instantly starting. How do I fix it? This is the code I tried:

game.Players.PlayerAdded:Connect(function(plr)
	game.ReplicatedStorage.Values.PlayerCount.Value = game.ReplicatedStorage.Values.PlayerCount.Value +1
	script.Parent.Parent.PlayerStats["Player"..game.ReplicatedStorage.Values.PlayerCount.Value].PlayerName.Text = plr.Name
	script.Parent.Parent.PlayerStats["Player"..game.ReplicatedStorage.Values.PlayerCount.Value].Name = plr.Name
	
	local plrStats = Instance.new("Folder")
	plrStats.Name = plr.Name
	plrStats.Parent = game.ReplicatedStorage.PlayerAssets
	
	local plrInventory = Instance.new("Folder")
	plrInventory.Name = "Inventory"
	plrInventory.Parent = game.ReplicatedStorage.PlayerAssets[plr.Name]
	
	script.Parent.MouseButton1Click:Connect(function()
		script.Parent.Parent.PlayerStats[plr.Name].BackgroundColor3 = Color3.fromRGB(0, 255, 0)
		script.Parent.Parent.PlayerStats[plr.Name].PlayerStatus.Text = "Ready"
		game.ReplicatedStorage.Values.PlayersReady.Value = game.ReplicatedStorage.Values.PlayersReady.Value +1
		script.Parent.Visible = false
	end)
end)

Bit of help, please! Thanks!