8
Because - believe it or not - you still earn reputation on Meta; it is just not shown and the main site's reputation is shown instead. Each upvote on an answer counts as +10 towards these badges, and each upvote on a question as +5, just like they would do on the main site.
If you track the Epic or Legendary badge in your (Meta) profile and click on the ...
6
I'm not sure how this would be possible. Apple owns .apple and I doubt they're going to give us a subdomain. Also, I'd presume the main site is more worthwhile for a .apple subdomain than just the meta site.
Only top voted, non community-wiki answers of a minimum length are eligible