What is the value of a bit?

Excuse me, but could you please elaborate on the concept of "a bit" in the context of cryptocurrency and finance? Are you referring to the smallest unit of a cryptocurrency, such as a bitcoin, or is there another specific meaning I'm missing? In the world of digital currencies, understanding the smallest divisible amount is crucial for transactions and investments. So, could you clarify the exact value and significance of "a bit" in this field?