Shalom,
Both can and have to do Teshuvah exactly like any Jew. Ask for forgiveness from anyone they have hurt, return anything that was stolen or taken without permission, repent from any wrong doing etc.
May you be blessed with a Happy and sweet new year
Rabbi Anava
Rivkah bas Tzedakah – Immediate recovery!
Chaya Shaina Chana Bas Itcha – Health
Devorah bas Sarah – Health
Menashe ben Khanom – Health
Yoel ben Menya – Health
Ovadia ben Levanah – Health
Chaya Rachel Devorah bas Leah – Health
Rav Chaim Cohen ben Blanka – Health
Rav Michael ben Rachel – Health
Ester bat Miriam – Health
Marganit Devorah Namoi Joseph Bat Rifka – Health