You can reach Lecture and Recitation Videos via playlists:

Math 117 Fall 2020 - Lectures:    https://www.youtube.com/playlist?list=PLg5e5HUyMbQWC99bK-ppA-_6vuHzOLDKS

MATH 117 Fall 2020 - Recitations: https://www.youtube.com/playlist?list=PLg5e5HUyMbQWL32yPlZro45rfCM0j0fXY