local event = game:GetService("ReplicatedStorage"):WaitForChild("died")
game:GetService('Players').PlayerAdded:Connect(function(player)
player.CharacterAdded:Connect(function(character)
character:WaitForChild("Humanoid").Died:Connect(function()
event:Fire(player)
end)
end)
end)
The remote event "died" is in the ReplicatedStorage.
This script is located in workspace.model
When I died, the message Fire is not a valid member of RemoteEvent "ReplicatedStorage.died" was displayed in the developer console

2 comments
:Fire() for RemoteEvents is actually :FireServer() and :FireClient() respectively.
FireServer can only be activated by local scripts and FireClient is for server -> client.