The answer is probably, unhelpfully, "it depends". I attended a fairly large high school, and we probably had a dozen shop class offerings. A much smaller school just a few miles away had no infrastructure to support any shop classes.

It's probably even more nuanced than that, though. My parents both attended very small schools in small towns, and both offered shop classes. All four schools mentioned were / are located in the Midwest, though, and none in large cities.

If I had to guess, I'd say probably the majority of schools in the US offer some form of shop class(es). But I don't believe any would necessarily be part of the standard curriculum. Generally, these classes are elective.