Are there English dubbed anime on Crunchyroll? It's of course understood that not all anime have been, nor will be dubbed.

Anyway, are there any English dubbed anime on Crunchyroll? If there are, is there a setting for it?
Crunchyroll has a small number of shows with English dubs. These are listed on their forums here. I could not find a way to search for them, so I have no way of knowing if the list is complete or not, but in any event there probably aren't a lot more than what is listed there. There have been others in the past, but never a huge number. CR is still primarily concerned with subtitled anime, which are typically cheaper and more abundant.

There are some other legal streaming sites which have larger collections of dubbed anime. What's available tends to vary significantly from country to country. In North America the biggest sources for legal dub streams are probably The Anime Network and Funimation. I unfortunately don't know whether these are available to the rest of the world or what the popular alternatives are in other places.