A photo would help a lot, from your description I'm wondering if it's a Schlage KS series padlock (
pages 7 and 9 of this product guide) with a Best SFIC cylinder (
Matt Blaze has a cool writeup.) Of course it could be easily be the other way around, with a Best-manufactured padlock and Schlage-branded SFIC cylinder

Anyway, if it's a SFIC cylinder, they're commonly 6 to 7 pins. (edit: also 5,
Gordon did a writeup on combinating one.)
For finding info, I do like the search function on this forum a lot, and otherwise the Discords linked in the menu to the left are very active and can help with lock info too.