MELD scores improve dramatically during treatment because, generally, your liver gets a little vacation from the virus during treatment
Sadly, if you relapse on treatment, your MELD score will rise as the virus returns
I am not sure I understand the nature of your question.
The MELD system was implemented in 2002 and is used to prioritize patients waiting for a liver transplant. The MELD score is a scale used for adult liver transplant candidates. It ranges from 6 to 40 (gravely ill). A person's MELD score determines how urgently a patient needs a liver transplant and where they are on the waiting list.
Depending on where a person is listed for transplant the MELD score number needed to be at the top of the waiting list varies widely here in the US. In California and NYC a person will typically need a MELD score in the mid to upper 30s. In other places in the country people may need a MELD score only in the 20s.
If a person's liver function improves, for example by eliminating the cause of a person's liver disease, such of such successfully curing a person's hepatitis C infection, then there will typically be an improvement in their liver function which will be reflected by a lower MELD score.
Hector