Yes, biz is a Scrabble word!
...and is worth 14 points in Scrabble, and 15 points in Words with Friends
biz
Noun
1. Your occupation or line of work
What Scrabble words can I make with the letters in biz?
2 Letter Words
Search for more Scrabble words
Words that can be created with an extra letter added to biz:
E:bize