It is not a smart idea to post your email on a public webboard.
The bad guys will harvest it and use it to send you spam.
If the payment went correct, you should have received the license/activation code by email.
If not, check your avast account >
https://my.avast.comIf it is not there either it can be you made a type in your email address when ordering.
You need to contact avast by submitting a ticket >
https://support.avast.comPlease (re)search before posting as this and many other things have been explained many times on this webboard already.