Here is what I have tried:
local Workspace.Instance.new(TextLabel) local TextLabel.parent = Workspace
Before I Answer Your Question
Your script is kind of wrong (but nothing you can't fix with lots of practice!) Here would be the correct way to write it
NOTE
All you can have is one line of code to have the parent to whatever you have.
--In a local script local screenGui = Instance.new('ScreenGui', StarterGui) local TextLabel = Instance.new('TextLabel',StarterGui.screenGui)
To Answer Your Question...
No it isn't possible for the TextLabel to be present and visible without the starterGui, since it's inserted directly into PlayerGui.
Oh, And By The Way...
I suggest you get better at scripting before moving to ScreenGuis. I can tell by the way your code was written.
GreekGodOfMLG