1- No that does not count has homosexuality. It counts as masturbation. Only if he does homosexual acts with the same sex then it counts as homosexuality or sodomy.
2- Watching homosexual imagery does not mean he committed homosexuality.
3- There is no hadd for the sins he committed. He must sincerely feel regretful, ask Allah to forgive him, and try his best not to do them again. If he observes this Allah will forgive him.
4- If the kiss is a normal kiss it’s fine but if it’s with lust and desire then it is haram