I feel like “forgivances” would be the logical word, but as this SH spell check is telling me, that’s not a word.
forgivance, n. meanings, etymology and more | Oxford English Dictionary forgivance, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary www.oed.com
This is difficult ... There are many word for the act of forgiveness, but the object itself? I can't think of any, to be honest. Maybe mercy, but that it is not really. Unless you want to turn the verb to a noun. The forgiven. Something like that.