What is the max supply of ID?

Can you please clarify what you mean by "ID" in the context of cryptocurrency or finance? If you're referring to a specific cryptocurrency or digital asset, different projects have different maximum supply limits, also known as the hard cap. For instance, Bitcoin's supply is limited to 21 million coins, whereas other projects may have different maximum supply limits based on their unique designs and goals. Without knowing which "ID" you're referring to, it's difficult to provide an accurate answer to your question. Could you please specify which cryptocurrency or digital asset you're inquiring about?