From an individual contact entry, you can access all the form submissions that person has submitted. To view those submissions, first access the contact entry via the Contacts icon and then click on submissions.
From there, you'll see a list of the forms this contact has completed. To view the submission, click on the name of the form.
After you click on an individual form submission, you'll see all the submission details. From here, you can delete the submission, print the submission, and either start a conversation or view conversation.