John Paul II has not yet been canonized, or even beatified, so he cannot be a confirmation saint at this point. But since the names “John” and “Paul” are saints’ names (e.g., St. John the Evangelist, St. Paul the Apostle), you could choose those names as your confirmation name in honor of John Paul II. If he is at some point canonized, you can then tell anyone who asks for the name of your confirmation saint that it is John Paul II.
