Named after the (in universe) Starfinder Repository of all knowledge, Guidance is a knowledge base established to hold and catalog all the information created for the Pathfinder and Starfinder Organize Play. (Including PFS2, PFS1, and ACG)
At the present Guidance is still very young. And the skittermanders are still loading information into it. Please be patient with them while Guidance comes up to speed.
If you are looking for the Pathfinder Society (Second Edition) Guide to Organized Play you will find it here