Hi @AprilDykes,
As @mzimmerman mentioned, Pearson MyLab is a 3rd party tool, which may or may not even be connected to Canvas at your school (or for you particular class). Unfortunately, it's not really a easy thing for people in the community hee to support for you, sinxce we don't hjave access to your Canvas site or know how your school/teacher intended for things to be done. I would suggest reaching out to your teacher via whatever methids they have made available to you (email, Canvas inbox, phone, etc) so they can help guide you through the steps to access the materials.
Cood luck with your class!
-Chris
