To view Application or Registration submissions, head to your Applications/Registrations dashboard.

From here, click the "Submitted" tab along the horizontal grey bar under the "+ Add New" button.

Here, you can view all users who've submitted or are working on an Application or Registration. Within the list of applications, you can view all user names, the Application or Registration they've submitted or are working on, and their stage status (as some Applications or Registrations may not be complete yet).