Hello @CathleenRowe and @Chelseyst ...
I believe that Tutor.com would be a third-party add-on to Canvas. Tutor.com is not something that you get "out of the box" when a school, college, or university signs a contract with Instructure (the folks who make Canvas). I'm not real familiar with all the functionality of Tutor.com, but I would assume that there is some sort of fee (could be a one-time fee or a yearly subscription) that your school would need to pay in order to use their product.
I would highly recommend that you reach out to your school's Online Learning / eLearning / Distance Education team at your school to see if Tutor.com has been integrated with your school's Canvas environment. They would be the best ones to tell you if they even have this integration or not (but based on your initial question, it sounds like you may have it?). My hope is that your school's Canvas admin team would be able to connect with your instructor to make sure that the Tutor.com integration is set up correctly for you and your classmates.
I hope this will help in some way. Sing out if you have any other questions...thanks!