What is the wrong in this remote event script?

i wanna put a script inside a Value This is my script

game.Players.PlayerAdded:Connect(function(plr)
	local leaderstats = plr:WaitForChild("leaderstats")
	local won = plr.leaderstats:WaitForChild("Won")
	wait(1)
	local rank = Instance.new("StringValue",leaderstats)
	rank.Name = "Rank"
	
	
local Event = game.ReplicatedStorage:WaitForChild("RemoteEvent")
local InsertScript = game.ReplicatedStorage:WaitForChild("Script")
	Event:FireServer(Event,InsertedScript,rank)
	
	end)

Output : FireServer can only be called from the client

u cant use fire server from a non local script; the output states this very clearly.

The issue is exactly what the error says it is; you cannot use :FireServer from the server. If you are trying to fire the client, use :FireClient(Player) or :FireAllClients. If you are trying to fire another ServerScript, switch to BindableEvents.