Well, sometimes you can catch it on network TV during special programming slots. Or, you might get lucky and find it on dedicated documentary channels. It's worth checking a few different sources to see where it's available for viewing.
It could be available on cable channels that often air such shows. You could also look on Amazon Prime Video. Sometimes, it depends on your region and the licensing agreements.
You might be able to find it on some popular streaming platforms like Netflix or Hulu. Just check their libraries.