I have the Bestiaries (1 & 2). The dragon has a race: that of the dragon I selected -- Dragon, White, Wyrm. But, I get a lot of conflicting messages. For example: on the Background page I'm told to select 3 more starting languages, but on the pop-up dialog to select languages they're all listed as invalid.
I've fixed the errors being reported in the selection list for the next update, thanks for the report.
For the languages - check the Bestiary page for white dragons (pg 101) - the Ancient white dragon there has only two languages listed (one of them free). When creating the wyrm dragon, we did not guess at what languages should be assigned to fill the rest of the free languages it gains from having high intelligence. The race also does not list any languages as being available to learn with high intelligence.
(I'm hoping that at some point, Paizo will actually make a ruling that once you've selected all the languages your race allows, if you still have INT slots to spend, you can select any language)