i have lost my serial number

hi my name is john mcdevitt and i have lost my serial number can you help me.

If you lost your Home Edition serial,then you can just re-register again to obtain new one. If you lost your Professional serial,then you should contact tech support or Alwil sale department. They’ll give you directions on how to recover the key.

What version, Home or Pro?

If home register again using the same details and email address and a copy will be sent. Use a different email address and you will get a new number.

Edit: P.S. There is no need to post the same issue twice.
Note your other thread received an answer before you posted this duplicate.