You can regularly track the number of students who have submitted or yet to submit their assignments.
Click the module access icon > Academics > Assignment to open the All assignments page.
Select the subject for which an assignment was given.
Click the title of the assignment.
The number at the bottom indicates the number of students who needed to complete the assignment, the number of students who have completed and submitted their work, and the number of students who are yet to submit the assignment.
Click on a status to view the list of students.
For more clarification, please watch this.