You can access Submitted Forms through the Web Portal and the App.
Submitted Form Folders are also available based on Group visibility when creating the folder/s and can only be created in the Web Portal when in the Submitted Forms list.
To locate the submitted forms, go to Forms > Submitted Forms.
To see forms connected to a specific client, in the web Portal go to CRM > All Contacts > Select the Edit arrow for the Client > Forms tab > Submitted.
In the App, go to Forms > Submitted Tab > Search for the Form to open it (you can search via the custom submitted form tabs, just below the search bar).