I think it’s obvious here that the length of the course depends on the chosen speciality and where you take the course.
If it’s some kind of course bought by recommendation on instagramYouTube, then its duration can be two weeks!
The standard time for a course from a good educational centre or university is 8-9 weeks, so it is worth keeping this number in mind when choosing a course! We at online coursework writing service have a 12-week course for aspiring writers to help them get into our profession.