Where can I buy FDUSD?

Excuse me, I'm just getting started in the cryptocurrency world and I'm trying to expand my portfolio. I've heard of FDUSD and I'm quite interested in it. Could you please tell me where I can buy FDUSD? I've been looking around but I can't seem to find a reliable platform or exchange that offers it. Any suggestions or recommendations would be greatly appreciated. I'm also curious about the trading pairs and fees associated with buying FDUSD. Could you provide me with some insights on that as well? Thank you in advance for your help!