Can anyone help me with a discussion topic for the book "The Scarlet Letter" by Hawthorne?

It depends on whether or not you see death as a release or a punishment. If you view it as a punishment, then he's not forgiven. If you view it as a release, then he is. Maybe a key to discovering the answer would be to determine if there are other places in the story where Hawthorne implies death is either a positive thing or a negative. It is also possible that neither or either conclusion is correct, because Hawthorne left the matter ambiguous.