Complete Python Mastery Lesson 6

I am not seeing the pylint extension that is shown in the lesson, I am using VSCode version 3.9.6. Can someone help me out?

Also, when I went to download Python extension it said it was already installed.

Yeah…It have seemed to be a problem for most of us.
it is just take time to work.
You can check that link where we have the same problem: Python Pylint Extention

Just go on in the course.