Its a bit techincal - you cant count number of years it took to complete MBBS and claim points. MBBS in pakistan too is a graduate level degree. but what you can do is check what Pakistani MBBS is against the below definition. you can check with Qorax as well. he may know somehting about it. if we were able to count number of years than 4 year bachelor would have fetched us 22 points but its the other way around - a sper their definition 4 years bachelor only gets one 20 points as per OP6 guidlines...
Note: Medical doctor degrees are generally first-level university credentials, in the same way that a
Bachelor of Law or a Bachelor of Science in Pharmacology is a first level, albeit “professional” degree
and should be awarded 20 points. If it is a second-level degree and if, for example, it belongs to a
Faculty of Graduate Studies, 25 points may be awarded. If a bachelor's credential is a prerequisite to
the credential, but the credential itself is still considered a first-level degree, then 22 points would be
appropriate. It is important to refer to how the local authority responsible for educational institutions
recognizes the credential: i.e., as a first-level or second-level or higher university credential
In pakistan MBBS is 17 years of education