Cybercriminals are sending out fake Equifax settlement emails. These emails are promising free credit monitoring and/or compensation. To make matters worse, they are spoofing the real Equifax settlement page. So if you click on the link in the email, you are sent to a very convincing web page encouraging you to file a claim. Of course, if you fill in their form with all of your personal information you are just sending your data to the criminals.
If you need to file a claim, do so by visiting the FTC website. You can find information there about the data breach and the settlement as well as a legitimate link to the Equifax site. Do not click on any links in any email that appears to come from Equifax. Visit their site directly using a browser search result or a bookmark. Everything that you need to know you should be able to find there. If not, there will be legitimate contact information you can safely use.