Found it in-store at Wal-Mart, your store may vary. It is also available on Amazon. https://www.amazon.com/Real-Ghostbusters-Volumes-Sous-titres-français/dp/B073VRG3XS

I did find official episodes here https://www.youtube.com/playlist?list=ELzQ4wm9KUZgqRwLEbWlgKHQ but it adds up to $100 for all of them.

I'm just going to order them here for less than half the price https://www.amazon.com/REAL-GHOSTBUSTERS-1-10-Laura-Summer/dp/B073VRG3XS/ref=sr_1_1?dchild=1&keywords=The+Real+Ghostbusters&qid=1593526384&sr=8-1

Still, I wish they were on Netflix or Hulu instead.