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 :)

The reason your script isn't working is simply because you cannot do :FireServer() from a server script. (You might have a local script there if so Im wrong but Im just assuming) I would have it where you have a ServerScript in ServerScriptService and havea local script checking. Which when it changes it Does :FireServer() from the local script in somewhere like ReplicatedStorage. Then you can have the server script waiting for the EVent to be fired which can change the text.