Hey guys...
I'm not too good on the whole dating thing (I don't even know if thats what you'd call it in highschool)
anyway I've been talking to this cute girl lately and she seems to be kinda interested in me so I figure I might ask her to hang out after school tomorrow, maybe get pizza or something. Anyway I dont want a script or whatever because I guess that will probably just make me nervous and mess up. But can someone tell me generally what to do.

Like do I have to pay for everything (Idk how would I even say that? Would I say like my treat or w.e)
I'm basically broke except for maybe 5 bucks (I guess I could get some money from my parents)
Also, how the heck do I even use 'kino'?
Do i kiss her at the end, or do I have to wait a few days.

Any other advice would be great.

I'll just answer each of your questions. Feel free to ask more if you want, I'll be up for another 2 hours or so.

No, don't mention anything about paying. When it comes time to pay, you just pay. If you feel like you have to say something at that point just say "I've got it" like it's no big deal. But yeah, I think you should pay.

Kino is just touching. Since you're in high school and you're just getting pizza, don't try to take this too far for the first meetup. Start with accidental touching (you "accidentally" brush her arm) then move to obvious touching (you grab her shoulder when emphasizing a point). Kino is a whole subject on its own so Google it a bit if you're unsure.

Whether you kiss her or not depends on how things are feeling. If you're both having a really great time and you've been escalating the kino properly, go for a quick peck. Otherwise, don't feel pressured. This is such a low-key meetup that it really doesn't have to happen. I'd use this first meetup as an opportunity to plant the seed to show her that you want to get to know her etc.

As for how you ask her? It's pretty easy. "Hey, want to grab some pizza after school?" That's literally all that needs to be said. Don't overthink it. Just make sure you have the logistics all figured out (transportation, location, etc).