Scored weed. These days it is more commonly used in reference to a legal purchase at a marijuana clinic.
Also used as make bag, making bag, etc...
Bongo: " Junior - tell me you made bag man. I need to get wasted like you can't believe.
Junior: " Dude, I'm so far ahead of you that it's like yesterday all over. I made a dime and there was no waitin' line.... chill bro...."
Bongo: "...yeeeeaaaahhhhh..."