cold score

Cold score might be considered as kinda opposite to cold turkey. While cold turkey refers to quitting person's habits/vices (esp. hard drugs like opioids/ dopegearsmackblowscag H)in some particular way, cold score is the way to get drugs.
The phrase cold is crucial here, it could be probably traced back from an old-fashion English and means dealing with things in an open, straightforward, outright, reliable or even raw manner.

Like not to give a fuck}.

Hence, cold scoring is getting coping drugs in a strange, unknown, often hostile area, without having any buddy pal, middleman or connection known, what exposes the person to troubles that range from being cheated ripped off, like buying poor stuff to get assaulted and robbed or even incriminating (to be caught by cops pigs and incarcerated locked up, what might easily lead to cold turkey).

Oh babe, no matter how sick you are gonna be, forget to even try to score cold in East LA since you never ever been there before. It's sure as fuck you are going to be ripped off or end up in a slammer . Or both.

Let's find some doc that prescribes, man, cold score is close as fuck to cold turkey.