How much is a bit in US?

Excuse me, could you please clarify what you mean by "a bit" in the context of its value in US dollars? Are you referring to a specific cryptocurrency unit, such as a Bitcoin or a satoshi, which is a fraction of a bitcoin? Or is it perhaps a reference to a different digital asset or unit of measurement? Without more context, it's difficult to provide an accurate answer to your question. Could you please elaborate on what you're asking?