Steps. Click on Summary. It's a tab in the upper-left part of the window. Scroll down and click on See how much you can send with PayPal. It's in the "More about your account" section. Click on Get Verified. It's near the top of the window. Follow the onscreen steps to get verified.
For you to verify your paypal, you have to first register an account with paypal.com. Put in your details which includes phone number, email address, age etc, paypal will send a code to your phone or email to very your details. But the process varies country by country. So first check the requirement for your country.