Using a remotefunction to find bool value in player?

Hello, I recently decided to convert one of my games to using filteringenabled and i've been trying to learn as much as I can about remotefunctions and remoteevents. I've been trying to convert this script.

        contestants = {}
        for _, player in pairs(game.Players:GetPlayers()) do
            if player and player.Character then
                local humanoid = player.Character:WaitForChild("Humanoid")
                if humanoid and humanoid.Health > 0 and player.PlayerGui.Playing.Value==true then
                    table.insert(contestants, player)
                end
            end
        end
        if #contestants >= 2 then
            print("yep") 
        else
            print("nope") 
        end

to be compatible with fe. The part that breaks this is

player.PlayerGui.Playing.Value==true

This part looks inside of the PlayerGui and find the value called Playing, if the value is true it adds the player to a table and if the table has more than 2 Playing players then it continues. But with fe the script can't look inside of PlayerGui to find the value. I believe that a remotefunction would come in handy here because it can return a argument but i've been trying to experiment and have had no luck. So I have come here to look for help. Thanks.