Bubbles in the beginning: 40
Points needed for 1, 2, 3 Star: 50 000, 80 000, 130 000
The first time you play level 9 you will probably not get the desired 3 Stars, but you can come back later to score more. At this time it would be good to read the general tips. If you haven’t already read them of course. :) Knowing that you should pop as few bubbles/cluster as possible and rather drop the bubbles is becoming valuable knowledge at this point and forward.
Here is a video walkthrough for level 9