How to restore deleted form

today i destroyed a form,

is there any backup?

If you have just deleted your form, you can still restore it in your My Forms list.

User guide: https://www.jotform.com/help/134-How-to-Restore-Deleted-Forms

OR

If you meant you want to revert a form to a previous version or saved point, you can use then the revision history tool to restore a form version.

User guide: https://www.jotform.com/help/294-How-to-view-form-revision-history