First, you need to turn on Bluetooth for both devices and then match up both devices to each other. From there, go to Blackberry's Bluetooth setup so as to select the Galaxy Note 2 and then press the enter key or trackpad, and the device menu will simply pop up. Once done select on the option "Transfer Contacts" and the device will pop up a request to allow you to accept a file named Phonebook.vcf'. Select "ACCEPT."
You can use some app to help you transfer Blackberry contacts to Samsung, I recommend this one, it can help you transfer photos, contacts, sms and more between Blackberry and Samsung, get it at http://goo.gl/mV6rMh.