Help with GUI creation via RemoteEvent?

local Players = game:GetService("Players")
local SpawnLocations = workspace.SpawnLocations
local requiredPlayers = 15
local i = 1

Players.CharacterAutoLoads = false

Players.PlayerAdded:Connect(function(Player)
    Player.RespawnLocation = SpawnLocations[i] -- Assign new Player to a Spawn
    i = i + 1
    Player:LoadCharacter()
end)

local event = game.ReplicatedStorage.RemoteEvent
event.Name = "playercountGUI"
event.Parent = game.Workspace

while i ~= requiredPlayers do
    event.OnServerEvent:connect(function()  

    end)
end

while i ~= requiredPlayers do
    local screenGui = Instance.new("ScreenGui")
    screenGui.Parent = script.Parent
    local textLabel = Instance.new("TextLabel")
    textLabel.Parent = screenGui
    textLabel.Position = UDim2.new(0, 495, 0, 25)
    textLabel.Size = UDim2.new(0, 150, 0, 50)
    textLabel.BackgroundColor3 = BrickColor.Black().Color
    textLabel.BackgroundTransparency = 0.5
    textLabel.Font = Enum.Font.ArialBold
    textLabel.Fontsize = Enum.FontSize.Size18
    textLabel.Text = "Players: " .. i
    textLabel.TextColor3 = BrickColor.White().Color
end

The first part of code defines the event, while the second part of the code is the event I have coded.

My issue is I have absolutely NO IDEA how to transfer the variable i between the event and the code.

Please help. (This is also my first time creating a RemoteEvent.)