Definitely 2. Anything else is made up or just indeterminate.

When I was nursing there were two.

I think in some parts of this world they have accepted 'they' as a gender. So 2 or 3 depending on where you are.

Male, female, both/unisex and people made out of plastic and make-up

I think there's 3. Male, Female, and Unisex 😆

I say 0..1..2...(n - 1) gender(s).

Do these count?

Okayy I vote3 XD