I see some say he and some say she.
Are those choices made by personal beliefs or is it not only people can't agree on if a god exists, which god exists but also if the god is a he or she?
I've always used the pronoun [him] when referring to God, the square brackets indicating that the biological sex implied by the pronoun is not to be taken too seriously. It's no less suitable in this post, where I'm speaking from within the story.
The problem is this. On the one hand, God is said, early on, to have made humans in [his] own image, suggesting [he]'s simply an early Superman type, not too unlike the gods and goddesses of Mesopotamia and Greece. Jacob perhaps wrestles with [him] in Genesis, or perhaps merely with [his] envoy. Out of the burning bush [he] speaks what I take to be fluent early biblical Hebrew, but clearly without the aid of a human voicebox or articulation system. I'm not sure what to make of [his] fondness for human sacrifices.
On the other hand, [he]'s expressly said to have created the material universe, so [he] didn't evolve on earth, and since what many say was the scandal with Asharah, [he] hasn't had a sexual partner, so how [he] came into existence and how [his] progenitors evolved, and where, and how [his] species reproduces, are all unanswered questions.
Of the five versions of Jesus in the NT, the Jesuses of Matthew and of Luke are said to have [his] Y-chromosome. (That's to say, the Jesuses of Mark, Matthew and John clearly do not. Mark is a straightforward Jewish citizen whose family think he's nuts, and becomes God's son by adoption, on the model of David (Psalm 2:7). The parents of Paul's and John's Jesuses, though never identified, are said to have made them descendants of David, hence were inferentially a Jewish couple in each case.
So I'm not persuaded that God is so like a human male as to have a Y-chromosome, Rather I think God is from an unknown species whose reproductive practices amongst themselves are unknown, and indeed may be by fission, or through two or more sexes, or some other how.