How much is 1 ace in USD?

Excuse me, could you please clarify what you mean by "1 ace"? In the context of cryptocurrency and finance, I'm not familiar with a unit of measurement called "ace". Is it perhaps a term used in a specific blockchain or cryptocurrency platform? If so, it might be helpful to know which one you're referring to. Alternatively, if you're asking about the value of a certain amount of a cryptocurrency in USD, it would be more accurate to specify the cryptocurrency by name, for example, "How much is 1 Bitcoin in USD?" The value of a cryptocurrency can vary greatly depending on market conditions and the specific cryptocurrency itself. Without more context, I'm unable to provide an accurate answer to your question. Could you please elaborate on what you mean by "1 ace" and what cryptocurrency or financial instrument you're referring to?