if all it says is p2, then that's purl 2, and you'll then pass the slipped stitch over those 2 purl stitches
but if it actually says p2tog, then that would be purl 2 together (which results in one stitch), and then pass the slipped stitch over that one purl stitch.
my knitting mojo is gone. it was already waning, due to time constraints, but with this current record heat wave in my area, it's near-impossible to knit while simultaneously two-fisting iced drinks. maybe it will return by summer's end?