Q. How do I access an archived or recorded live lecture from my class?
Your instructor (the person who gave the lecture and recorded it) is the only person who has access to the recording link -- and therefore, is responsible for providing that link to students.
That said, most instructors typically post the live lecture link in the Course Announcements area, so scroll back through the announcements to find the live lecture you are looking for. Some instructors also send lecture recordings to students via course email. Lastly, consider contacting your instructor directly for the recording links.