Hello there, @MandeepRAE ...
To be sure, within your Canvas environment, click on "Courses" >> "All Courses" to see a listing of all the courses you should have (past, present, and future courses).
How do I view all my Canvas courses as a student?
On the "All Courses" screen, if you see the course(s) you are looking for, it may not be "published" yet. Your instructor(s) may need to publish the course(s) so that you and your classmates can get access to them.
If you do not see the course(s) you are looking for, then you will need to reach out to your school's Online Learning / eLearning / Distance Education department. We here in the Community cannot help with enrollment questions because we do not have access to your course(s) or your school's Canvas environment. Hopefully folks at your school will be able to assist you with this so that you can get the access you need to start your course work.
Good luck to you! Keep us posted. Thanks...take care, and be well.