I just got approved on my first ever credit card

Hi! For context I am a fresh grad & working na sa first job ko kaka 1 month ko pa lang so I got shocked nung na approved ako sa ub rewards platinum visa.

This is my first cc, tho meron naman na akong mga BNPL like atome. Just wondering if I can already use my cc kahit wala pa akong physical card? (virtual card gagamitin) and automatic na po ba yun huhu or need pa approval ng bank po? same po ba sila ni atome na bayad muna then pag billing saka i cconveet to installment? & eligible po ba yun for naffl?

last question, pano ko po malalaman billing date & due date ko po?

thank you in advance! I know searchable ung mga qs but i want answer sana sa mga mismong cc users kesa sa ai huhu tysm po!