reset security password

Do you mean your user password for an account on your MBP? If so, just start up whilst holding down the Command and R keys and boot to your Recovery partition. Go under the Utilities menu and open Terminal. In Terminal, type

resetpassword

...a small app will open allowing you to select the user for whom you want to change the password. Enter the new password (twice) and give yourself a 'hint' and then when you're finished reboot and you can use your new password.

If you're not writing of your user password - if you've an EFI password, for example, I can't help you.

Clinton

no i need reset in my app store - bcoz i earlier bought tomtom , and when i wanna download it - apple ask me identify me and answer on 2 security questions... but i dont remember it

It is better to start anew with your question.

https://expresslane.apple.com/Issues.action

Click “Get Support” button.

Click “More Product & Services”

Click “ Apple ID”.

Click “Other Apple ID Topics”.

or call Tech support 1-800-275-2273