How do I make what the learner types in the Text Entry box of one slide appear in another slide? Is this possible?

I changed the title: a learner cannot type in a Text Caption, only in a Text Entry Box. That TEB has an associated variable.. The generic name of that variable is the same as the name of the TEB. Insert that variable  in a text container on the later slide. A text container can be a caption or a shape. Use the X button to insert the variable, it will be enclosed in $$ but that is a placeholder. On Runtime it will be rpelaced by the value of the variable.

In this screenshot I show that X button, and have chosen another variable.