How to fix my serversided Reserved server?

I don't know about TeleportService, but I hope this works.

local TS = game:GetService("TeleportService")
local Players = game:GetService("Players")
-- :WaitForChild() waits until Teleport is found
local RemoteEvent = game.ReplicatedStorage:WaitForChild("Teleport")
local PlaceId = 5006415599

local code = TS:ReserveServer(PlaceId)

local function Teleport()
    for _, player in pairs(Players:GetChildren()) do     
         TS:TeleportToPrivateServer(PlaceId,code,player)
    end
end

RemoteEvent.OnServerEvent:Connect(Teleport)

You were trying to Teleport the Player Service itself, not the actual Player, so I looped through the PlayerService (Getting the actual players playing the game) and teleporting them.

as I said I dunno about TeleportService, so I might be wrong