How do I buy a MacBook Pro with a Russian keyboard in United States
The only way you can find out if some retail store might be able to get one of these for you is to contact them directly yourself.  I would try a store in a big city with a significant Russian community.  I have not heard of anyone finding it in the US, but you never know until you ask.

The online Apple store in the UK has them, if you are planning a trip there.