I could see them carrying CBD in pill / gelcap form. (It pretty much snuffs out my migraines.)
I don't think they'll carry intoxicating forms of marijuana, though. (I've never seen a CVS with alcohol, but that could be because of how my state handles liquor licenses.)
Walgreens sells cigarettes, cigars, basic alcohol (beer, wine, hard seltzers etc), occasionally liquor, nicotine patches & packets, and snuff. They sell OTC Narcan, and now OTC birth control. They moved into the last two items pretty much immediately upon availability.
They'll definitely look at their options for the marijuana business as they can safely do so legally.
I don't think they'll carry intoxicating forms of marijuana, though. (I've never seen a CVS with alcohol, but that could be because of how my state handles liquor licenses.)