If you are homosexual would you enter heaven?
No where in the faith will you find that being homosexual is forbidden. However, acts of homosexuality are explicitly forbidden.
Same for punishment, there is no punishment for being homosexual, but there is punishment for homosexual intercourse. And even then, punishment for sex-related crimes are almost impossible to catch. You need (obviously) an Islamic State with Sharia Courts, and multiple conditions/evidences of the crime such as witnesses to the explicit act of intercourse, etc.
As far as entering Heaven, it is all up to Allah. This includes everyone, homosexual or not. In short, being homosexual is not a sin/crime unless you act upon those urges, similar to non-marital sex, being heterosexual is not a sin/crime unless you commit Zina/Adultery.
And Allah knows best.
Homosexuality is condemned in Islam, in fact the punishment for being gay in a muslim society under sharia law is the death penalty, literally. Here is a some pieces of scripture from the Qur'an and Hadith to support this wildly accepted view among muslims:
"And (We sent) Lot when he said to his people: What! do you commit an indecency which any one in the world has not done before you? Most surely you come to males in lust besides females; nay you are an extravagant people. And the answer of his people was no other than that they said: Turn them out of your town, surely they are a people who seek to purify (themselves). So We delivered him and his followers, except his wife; she was of those who remained behind. And We rained upon them a rain; consider then what was the end of the guilty."Qur'an 7:80-84
Narrated by Abdullah ibn Abbas: The Prophet said: If you find anyone doing as Lot's people did, kill the one who does it, and the one to whom it is done. — Sunan Abu Dawood
Ahmad narrated from Ibn ‘Abbas that the Prophet of Allah said: “May Allah curse the one who does the action of the people of Lot, may Allah curse the one who does the action of the people of Lot,” three times. — Musnad Ahmad: 2915
I'm no muslim myself, but this is the standard sentiment most of the islamic scholars will agree upon.