Yes a ruptured appendix can kill you if not treated in time.
When you're experience appendicitis you need to see a doctor or go to the emergency room or urgent care center right away.
If the appendicitis gets worse and worse then it can lead to the appendix rupturing which can then lead to death in about 2 hours or less or it might take longer.
Never wait around when it comes to appendicitis.
The surgeon can remove your appendix and you won't have to worry about it anymore.
I had my appendix removed as a preventative measure because I did not want to experience appendicitis.