Awesome, you have reached 100 points! Usually, users reach this value after using Drink!Water for a couple of days. Keep in mind, that points will decrease by time, so you need to drink regularly to keep them on a high level.
Tipp: The calculation of the points is based on all your sips taken within the last days. Therefore, your score does not simply tell you your daily performance, it reports your performance within a spread of days.