My father has cirrhosis and has been in the hospital three times in the last two months and has had over 30 liters of fluid drained from his abdomen how long does he have left?

That would depend upon several things. How much liver function does he have? Is he trying now to live a healthy lifestyle and follow his doctor's orders?

The best thing for you to do is talk to his physician. It is foolish for anyone to try and give you medical advice in this format, and his physician can best advise you.