It would help to know if you are an instructor or a student. If you are a student, the ability to publish a course is only available to your instructor(s). Students cannot publish courses. An instructor will publish a course when the content is ready to be viewed by you and your classmates. If you are an instructor, however, you should be able to follow the steps in this Guide to publish your course to make the content available to your students: How do I publish a course?.
I hope this will be of help to you. Sing out if you have any other questions about this...thanks! Take care, stay safe, and be well.