Into how many languages has the Pearl of Great Price and the Doctrines and Covenants been translated? The Bible is by far the most translated book in the world at over 470 languages.  Another question asks specifically about the Book of Mormon, which has apparently been translated into 82 languages.

The LDS Church recognizes the Pearl of Great Price and the Doctrines and Covenants as Scripture as well.  In fact, they seem to contain the primary basis for many of the doctrines that are exclusive to the LDS.

So, what are the translation statistics for these works?
I was going to make this a comment, but it's much too long. I couldn't find official statistics, but I think this is enough to offer as an answer:

Based upon what is currently available, the Pearl of Great Price and Doctrine and Covenants can be purchased separately in the following 11 languages:

Afrikaans
Arabic
Armenian West
Catalan
Croatian
English Braille
Fijian
Greek
Polish
Rarotongan
Tahitian


However, the Pearl of Great Price and Doctrine and Covenants are much more typically combined with The Book of Mormon as the Triple Combination available in the following 33 languages:

Albanian
Armenian East
Bulgarian
Cebuano
Chinese
Chinese (Simplified)
Danish
Dutch
English
Fante
Finnish
French
German
Haitian
Hungarian
Icelandic
Igbo
Ilokano
Indonesian
Italian
Latvian
Lithuanian
Mongolian
Norwegian
Pangasinan
Portuguese
Romanian
Shona
Spanish
Swedish
Tagalog
Ukrainian
Vietnamese


By addition, (there are no exact duplicates) both books are currently available from LDS Distribution in 44 languages. By no means does this mean it is not available at least in part in other languages (LDS.org now serves content in your choice of 100 languages, most of which I do not understand).