You might get around 80 -86 Credit for them, you need at least 120 credit hours to get graduate (under Grad) here in most of Universities, that will be longer route for you. If you want to go Grad School here, take Gmat/Gre and go for pre masters ( most of Universities offer this program) or if you have money and time go for Executive MBA (I am not sure you but might be able to get in Executive MBA with Nepali Mba). Good luck.