For those with an American Express credit card, you can get your credit score for free. This CreditCardForum blog post
has a good overview of this AmEx offer. According to this post, there are no gotchas like some credit score offers that require you to cancel to avoid a monthly fee. However, there is an important downside. It's not your FICO score.
If this offer doesn't work for you, there are several other ways
to get your credit score for free.