This gist tells you how to download a skillshare course playlist without any signup.
Go to https://colab.research.google.com/github/calvinhobbes23/Skillshare-DL/blob/master/Skillshare_DL_[KENWAY].ipynb#scrollTo=W4DvOJaqsGaj
Signin with a gmail ccount (I recommend a fake gmail account)
Make sure that there is enough space in your Google Drive since this script downloads and transfers the videos to the Google Drive of the account provided.
Sign in and then it will give a link. Go to that link and copy the unique code and pate it here.
Then run the scripts serially one after another, after each script/step completes.
When you are asked to enter the course link, make sure its something like
https://www.skillshare.com/classes/YouTube-Success-Script-Shoot-Edit-with-MKBHD/731552530
At the end, you will have the entire course playlist downloaded, with a suffix of -DL
.