To find your license number in your AVG please visit the page How to display/copy the license number.
If you need to have your license number re-sent to you e.g. when installing AVG on a new computer, you can use the AVG License Retrieval page.
When you purchase AVG in a retail store, you may receive a Sales Number in the box, which is valid for 30 days from the day of installation. To receive a License Number that is valid for the whole duration of your license, you need to register your Sales Number on the Registration page.
Note: There is no license number in AVG Family Safety and AVG LiveKive.