Is there a quick way to see how many (count) target languages are in a project from views?

The best thing you could do is to create a Virtual Column.

This is my trick for getting a count of all language pairs in a Virtual Column:

#foreach ($lang in ${utils.unwrap($this).getLanguageCombinationsShortDisplay().split(",")})
#set ($langcount = $foreach.count)
#end
$langcount

But there may be a better way.

If this works, you could also change it to this.
I haven't tried it, but should work:

#set($langcount = ${utils.unwrap($this).getLanguageCombinationsShortDisplay().split(",").size()})
$langcount

Thanks guys!