Ehhh, no.
As I'm residing in Germany, I currently cannot buy English language TV shows with Catalina's TV.app, but I can buy them with iTunes (on an appropriate macOS version.)
(TV shows are split into separate, extra to buy and separate to download, versions of only English and only German. They are not, like most movies, one buy and one downloaded file with multiple language tracks. TV.app does not show you those separate language versions, only the German one. Unless you haven't bought the English language version, that is, which you cannot do using TV.app. Perfect bureaucratic roundabout.)
So far, Apple iTunes support doesn't believe me. Go figure.