After a jotform is submitted can the user go back and edit?

How can a form be edited after it has been submitted?

You have the option to add an Edit Submission link in your email notification/autoresponder. So when the form is submitted, the user will receive an email along with the Eidt submission link. The user can then edit the form and re-submit.

Please check the guide below which explains clearly:

https://www.jotform.com/help/40-How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date