A VPIP of 20 is far from tight. Tight is something like 15/12 aka set farmer. 20/15 is straight up TAG. I'm like 20/14 or something and I'm far from tight. I open with all kinds of crap from LP. Anyways ..

Less than 15 VPIP = Tight
15-20 VPIP = Looser than above but also TAG.
20-25 VPIP = TAG mixed with some loose tendencies
25-35 VPIP = Definitely very loose, plays a ton of pots.

PFR
0-5 = Passive, when they raise they always have the goods.
5-10 = Very tight raising requirements.
10-15 = Open raises a wide range of hands
15-20 = Borderling LAG play
20 + = LAG