undo delete

To my understanding, you have deleted a form and you would like to restore it? 

Or, you have accidentally deleted a field on one for your form and want to put it back. 

You can check the guides below that might help you on your issue:

How-to-Restore-Deleted-Forms

How-to-View-Form-Revision-History

If none of the guides below helped, please give us more details about your issue so we can better assist you. Thank you.