When you're questioning your gender, What do you call your sexuality? Cause say a gal likes gal but doesn't know if she's rly a gal or a guy, the is she lesbian or straight???
You could call yourself andro/gynosexual which means attraction to males/females. You could just say you like <what gender you're attracted to>. Personally, I thought of myself as a straight guy for most of questioning because there was so much doubt about my identity.
If they identify as male and are only attracted to girls, they're straight. If they identify as female, and are attracted to girls, they're gay/lesbian. If they're non-conforming and are only attracted to girls, I'd just go with queer.
Most transgender people base their sexual label on their identity proper rather than their assigned gender; a male-to-female trans girl who likes only girls would be a lesbian, etc.
In general, when you talk about someone's sexuality, you go from the perspective of the gender they are, not their assigned sex or birth gender (unless they're cisgendered or not trans). If you're not sure what your gender is or you're non-binary, you might just frame your sexuality from the perspective of what you're attracted to. Or, as some other people have said, just say you're queer. Bam. Done.
I think using queer is fine, as a lot of people said, only I feel that it can be a little risky when you're unsure of what you are at the moment because if it turns out you're a trans guy and only like girls or a trans girl who only likes boys, "queer" can mislead a lot of people into thinking you're gay... Really, I'd just go with questioning if somebody asks, and once you know, say "I like boys.", "I like girls.", "I like everything." or whatever is true... That's what I do, simply because if I said I'm straight for example, a lot of people wouldn't know what I meant because I'm trans. They'll just ask me if I like boys or girls in a more direct way then, which means I'm just prolonging what shouldn't be an hour-long conversation... Again, I don't expect you to follow my lead, but I think it's a good suggestion. Questioning, after all, means you DON'T know what label to give yourself besides "Questioning". Of course, you might know some things about you but... Oh, you get my point! I hope you found this useful.
It probably depends on which stage of transition they're in, their views on sexuality and gender, options available to them... some folks are just fine saying "I like guys/girls" and leaving it at that. I'm bisexual, so don't have to think too much about it.
I would just say "I like girls" or "I like guys" or something along those lines, if my gender identity was still in question, or I don't have a label for it. Sexuality labels are almost always based off of one's gender [identity], and that may or may not match with the gender they were assigned at birth. For example, if I were only attracted to women I'd say I'm straight, even though I was assigned female at birth, because my gender identity is [more or less] male. If I were nonbinary then, I would simply say that I like girls.
Personally, while I was questioning my gender and before I accepted it, I still used gay, just privately. I knew I wasn't straight, but I like guys. It's kinda what tipped me off in my early teens. I used queer. I think most people do while they're questioning? (But, you know, some people think of that word as a slur, so, careful with that I guess?)