The Spring 2020 semester begins on February 3rd. You will not have access to your Canvas courses until your instructors choose to publish them. This might mean that you see your courses already, or that you won't see them until the first day of instruction.
If you have any questions about whether or not your courses are visible in Canvas, you can check under the
tab on the black navigation bar within the learning management system. This will give you a list of your courses and whether they're in Canvas as "published" or "unpublished."
You should also reach out to your instructors directly to find out more about any unpublished courses. It might mean your instructor isn't using Canvas to teach that course.