It is well known that homosexuality is forbidden to us Jews, but what of the gentiles? The Laws of Torah and Halacha do not apply to the goyim, but the Laws of Noach do. Where in the Seven Noachide Laws does it forbid homosexuality(both male and female), and what do the rabbis and the Talmud say about it? It forbids immoral sexual acts,but does not specify homosexuality?

Shalom U'verachah, One of the seven noachide laws is the prohibition against sexual immorality and this includes homosexuality. There are several books on the Noachide laws that will give you a full account. Kol Tuv