How can I review a form I am completing?

To my understanding, you are looking for a way to review the data you entered in form fields before you submit the form.

If that is the case, you can include in your form the Preview Before Submit widget.

How-to-Add-a-Widget-to-your-Form

However, if you form is a JotForm Card, you can enable the "Review Before Submit" option from the builder page settings.