I have key license and i need to know the activation code

Hello  @Amr Salameh,

Welcome!

You can get an activation code in a number of ways, depending on how your purchased your license:

• If you purchased a Kaspersky product in a Kaspersky online store, the activation code is sent to the email address you specified when making the purchase.
• If you purchased a Kaspersky product on a CD, you will find your activation code in the Quick Start Guide.
• If you purchased a license renewal card, see the code on the back of the card.

If you experienced any activation code issues: 

If you bought the license via MyKaspersky account or the Kaspersky website:

Contact Digital River's customer service department.
Create a request via this web form.

If Kaspersky Internet Security software was brought from a third party source you must contact them  

Thank you

Reference:

About activation codes for Kaspersky products