Students can view instructor feedback through the Grades page in the course Schoology page. This page is located on the left-hand side in Schoology. This will allow you to view general comments on the side of each grade.
To view more in depth comments, you can click on the assignment name on this page (i.e. Module 1: Critical Thinking). Once you are on the assignment page you will want to click on the Assignment submitted on the right hand side. This will show your assignment along with more in-depth comments from your instructor on the assignment itself. You can also comment on this same page if you have questions on certain points.
You can also contact your instructor by phone or email. See Contacting Instructor to see how.