A lot depends on your transplant center and what MELD they usually transplant. Also your blood type. Basically you are waiting for a comparable organ. If you have a less common blood type then you may be transplanted sooner as the organ will by-pass anyone ahead of you on the list with a higher MELD but a more common blood type and thus not compatable with the organ. If you have type O the most common there may be people with a higher MELD ahead of you.
But depending on those factor you could get a transplant in a matter of days or months there is really no way to know.
Your transplant center is likely best equipped to answer your question.
Some people are able to get listed at more than one center. If you can get on the list at another transplant center that typically transplants at a lower MELD than your center that could also decrease your wait.
Best of luck