Ok i am not an expert but i think you could do it this way.
First on the widget where you want to show the text that you have entered create a Text Variable and set it so that editable and expose on spawn to checked.
Next bind your text on the widget to that variable:
Now you need to set the text in the widget with the textbox as shown below. After you set the text and change level you can then create your other widget which has the option to set the “TextToBeDispalyed” which you want to set to “EnteredText”. This option is available since you set editable and expose on spawn to checked earlier.
EDIT: You might need to add “Add to Viewport” at the end of that.
Hope this helps!