He doesn’t. Catholics don’t believe in “Penal Substitution” as taught by Luther and Calvin so the question should be directed to Protestants. A good book on this subject, but extremely difficult, is “The Atoning Death of Christ,” St. Thomas’s Doctrine of Vicarious Satisfaction, by John P. Joy.
Big mistake. How would you know for sure that He forgives you? When you confess your sins to a priest and meet the conditions of a good confession forgiveness is guaranteed and the Devil can no longer trouble you with it.
I’d say, “what place is that?” Do you really believe that mother Teresa and Judas Iscariot will end up in the same place?