The maximum supply is roughly 200,000,000 KMD.
It will eventually go beyond that as we will have 1 KMD block rewards indefinitely. However, it is very low inflation wise. Here's how you can calculate how much inflation we will have around the time the "max" supply is reached.
1 KMD/block x 60 blocks/hour x 24 hours/day x 365 days/year = 525,600 KMD/year 525600 ÷ 200000000 = 0.002628 = 0.26 % annual inflation
At the moment KMD block reward is 3 KMD.
Most of the new KMD goes to the users through Komodo's 'active user rewards' that are ~5.1% per year.
An easy place to find the current supply of any coin is coinmarketcap.com113. As of today (February 10, 2020) the circulating supply of KMD is: