Need help Casting from My Level Blueprint to my Widget

Basically within my Level Blueprint I have a Reaction time which after formatting is now in a ‘Text’ Variable and I want to display this with a Widget which will appear after a button press and will display this variable like a Game Over screen. I have tried casting the level blueprint within the Widget Designer and this does not seem to be possible.
I am a novice and would appreciate the help even if it is insanely obvious. Thanks again.