Yes there are many tutorials on this but all of these (even the ones in 2018) are now outdated, because there is no more "creator" tag in the Humanoid, and I am having trouble trying to figure out a solution.
p.CharacterAdded:Connect(function(char)
char:WaitForChild("Humanoid").Died:Connect(function()
--- something here -----
end)
end)

1 comment
The creator tag is nothing that has ever "existed" afaik, but you can script to create such an ObjectValue or any other type of value object to keep track. But you still have to implement it.