Is it a problem if I watch the TV show iron fist. It has some stuff related to Buddhism in it. The main character does a lot meditation and I think it has some
Buddhist mythology in it.
This is a good question. i am not familiar with the show, but we are not allowed to read books or learn the mythology of other religions. Therefore if this show has or promotes Buddhist ideology you should not watch it.
Rambam Hilchos Avoda Zara 2-2