For a live USD to BNB conversion, check
https://paybis.com/usd-to-bnb/ – type your dollar amount and it instantly shows how many BNB you'll get, updated in real time. You can also reverse it to see the dollar value of any BNB amount. No account needed. As for the licenses, Paybis recently secured both MiCA (CASP) and PSD2 authorisation – details in this
LinkedIn post. For someone buying BNB, it means you're dealing with a regulated platform (funds held separately, proper compliance), which adds trust compared to unregulated alternatives.