Is the license number somewhere in the files or template?

[Pandemikk]

By license number I'll assume you mean you customer number.

Your customer number is not displayed in ay templates or PHP files.

Now if you really do mean license number, as in that number each download of vB automatically generates and has commented in your PHP files... This is available in your PHP files but not in any templates (as far as I know). I really wouldn't worry about your license number as it can not be used at all for anything. I believe it's only purpose is so vB can check for fraud.