I cleared out my notifications but I need the information on one of them. How can I restore them or where are they now?
Once you clear or swipe them away, they are gone. Typically though, the email app or messaging app has a bubble number count on the icon indicating an uncheck notification.
The notifications don't delete whatever you were notified about...email, text, etc. Whatever app generated the notification will have unread messages that will have the info you missed on the notification.