What kind of scam are you talking about? Webcam blackmail? Romance, Lottery? Phishing? what?
Did you give your details to the person in email? What info did you give? Your password to an email account? or what?
Block scammer in email or just do not open any emails from him or any other unknown people, DELETE UNOPENED.
If blackmail scam/sextortion go here and DO ALL after filling the online form. http://blackmailscams.com
If you are a victim of another type of scam, read this and follow all of the advice there.What to do if you are a victim of a scam http://www.scamsurvivors.com/forum/view ... =3&t=26504