licence for upgrade

i need another licence sent to me since i restored my laptop and lost the information

Read here to see about having license resent https://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=30

Resend avast License http://www.avast.com/resend-license-paid.php, you will need to enter the email that you used when purchasing the license, e.g. the one that the original email with the link was sent.