for 2023 you can not claim him as a dependent because he's not relayed to you and did not live with you for the entire year.
if he lived with you for all of 2024 and had a gross income of $5050 or more or if you did not provide over 50% of his support. you can not claim him as a dependent
even if you can claim him for 2024, you can not claim head of household fil9ing status because he is not a blood relative.
if you have other questions be specific.
