This article will show you how to preview a form. The preview is entirely interactable, however, you are not able to submit the form from the preview.
Important Note
When you make a change to the form you must save the changes before they will appear in the preview.
Instructions
Navigate to Forms
Select the form you wish to preview
Select the Builder tab
Click Preview in the top right corner
The preview of your form will appear
To move between your available apps, select the drop-down in the top left of the preview and select an app