You're entitled to one free report every year

You don't need to pay to keep an eye on your credit rating, you're entitled to a free report, from each of the major credit reporting agencies, once every 12 months. It's worth taking advantage of this every year, because it lets you keep an eye on your credit. Mistakes can be made, and the sooner you catch them, the better.

The site is http://www.annualcreditreport.com/

This however does not include your credit score

There are services you can signup that will give you your free credit report and credit scores. They offer a trial period that you can cancel after you get your score. One of those sites is below:

Get your FREE 3-in-1 Credit Report & Triple Credit Score with trial