How to make a custom bar on android

Question

I haven’t started to do anything yet, so I haven’t put any code here, I need a direction of what to study to do a pub in the shape of a water tank and as it fills up, a water goes up inside the box... I found a similar example here and I will paste the image, I also wanted to know if it is possible to move water. Follow the example with water moving but web, need for android

https://codepen.io/junebug12851/pen/mJZNqN