Do you use remote events or functions in a script?

Just wondering, getting back into LUA after a billion years to be honest.

I was making this thing where there's a bar on the players screens and it constantly updates and if the StringValue changed then the text did to, so I went into an actual server on my testing game and tried it and it didn't work, I also did it with remote events but it gave me an error, and I completely forgot what functions were.

Anyways, I really need help with that, here is the local script for the bar. (Located in the PlayerGui when joined)

while true do
    wait(0.01)

    script.Parent.Bar.Frame.TextLabel.Text = game.ReplicatedStorage.Bar.Announce.Value

    if game.ReplicatedStorage.Bar.RemoveWeapons.Value == true then
        game:GetService("StarterGui"):SetCoreGuiEnabled(Enum.CoreGuiType.Backpack, false)
    else
        game:GetService("StarterGui"):SetCoreGuiEnabled(Enum.CoreGuiType.Backpack, true)
    end
end

And here is the bar value changing script that's located in ServerScriptService

script.RemoteEvent.OnServerEvent:connect(function(player,text)
    game.ReplicatedStorage.Bar.Announce.Value = text
end)

while true do
    wait(2)
    script.RemoteEvent:FireServer("This game is being worked on")
    game.ReplicatedStorage.Bar.Announce.Value = "This game is being worked on"
    wait(2)
    script.RemoteEvent:FireServer(
        "Please come back later"
    )
    game.ReplicatedStorage.Bar.Announce.Value = "Please come back later"
end

P.S. I know I put the RemoteEvent in the script, I just tried to test it. I also put it in the ReplicatedStorage thing and it still didn't work; gives an error.

Anyways, if you can help me then thanks :)