Hello Sigovegas,
Thanks for using Apple Support Communities. I see that you have received an App Store receipt email but you don't recognize the purchase and can't find it in your purchase history. I can surely understand how this could be concerning. I'm happy to help.
This appears to be a phishing email that could have been sent to trick you into sharing personal or financial information. Please follow the steps in the links below to help identify and avoid phishing emails:
Identify legitimate emails from the App Store or iTunes Store
Avoid phishing emails, fake 'virus' alerts, phony support calls, and other scams
If you see an unauthorized iTunes purchase on your billing statement, take a look at the the steps in the following link:
If you see 'itunes.com/bill' or an unfamiliar charge on your statement
Have a wonderful day!