should i pay to continue my Data science course ? beacause it says to upgrade pro version.
The first part of the Data science path is free so you can try that, like a book if you would like to continue learning the path then sure, buy pro.
Pro also includes other things, not only that path, you could make your way through all paths or courses and if you are done with the lessons on the courses then there are freeform projects and quizzes waiting for you, you can skip them if you want.
Hope this helps