how can i get back my deleted

Hi,

It appears as though the rest of your question may not have gone through completely.  If you delete a form, it can be restored from the trash area of your account:

http://www.jotform.com/help/134-How-to-restore-deleted-forms

However, if you delete submissions, they are unfortunately not recoverable.

If there is something else you are looking for, let us know and we will be happy to help.