Can I buy BNB of 1 dollar?

Excuse me, I'm just starting out in the world of cryptocurrency and have a basic question. Is it possible for me to purchase BNB, specifically just one dollar worth? I'm trying to understand the process and see how it works with small amounts before I invest more. Could you please explain the steps involved in making such a small purchase? I'm also curious about any fees or limitations that might apply to such a transaction. Thank you for your help in clarifying this for me.