whats the amount of the free weekly course lessons limit?

Only one course per week. Personally I don't find chess.com lessons to be that critical. Watching GM Naroditsky's speedruns and guides is more than enough in my opinion. I.e YouTube chess lessons are more than worthy that is, so I personally wouldn't buy a membership for just the lessons. Have a good day 😊!

For members who don't have membership, they are only able to choose 1 video lesson per week. For members who have membership (Gold, Platinum, Diamond), it would be unlimited access to video lessons. Also regarding with @Tekhenu_m_Mer said, it is true but not completely. There are some Chess.com lessons that are high quality. The only is that they are hard to find. I found a certain FIDE master who's videos were top tier and very useful, but they weren't on the front page. Though I might not recommend to buy membership if it was just for lessons.
I am intrigued @GrandRimuru ....Could you perhaps show us the lessons you mentioned? I would greatly appreciate it as I had no luck finding such lessons. Thanks in advance.

I am intrigued @GrandRimuru ....Could you perhaps show us the lessons you mentioned? I would greatly appreciate it as I had no luck finding such lessons. Thanks in advance.
The problem is that I left chess.com for 2 years, and before this 2 years I used to watch chess.com lessons from a certain international master (whom I don't remember his name), and came back few days ago. I completely forgot who's video it was.