If you want to create a VK account in Mobile Legends, this guide will tell you how to do it. Go through the guide and follow all the steps to create an account.
Go to the Google play store and download the VK Application.
After that, open this application and Sign up.
You can use your Facebook account to log in, enter your Mobile Number for the code. You will get an account now, just need to connect it to the ML app.
This is an additional security for your Mobile Legends account.