Take a placement test online (many teachers offer free PDFs of Keith Snell’s criteria). General guide:
If you are looking for specific content, it is helpful to distinguish between the two levels likely referenced: keith snell piano repertoire pdf 32
If it’s a full book scan without a watermark or purchase receipt, it is almost certainly illegal. Legal PDFs usually come from the publisher’s website, require a login, and have your name embedded. Take a placement test online (many teachers offer