BuddyPress.org

its better to use social button plugin

No it’s not..

This is a great Tutorial, thumbs up for giving this nice piece of code.
Social Media Button Plugins often stack a lot of scripting in your website. Lots of JavaScript and a other junk you’re not looking for while WordPress + BuddyPress is already pretty heavy because of all features.

This Tutorial is clean and very basic, it does what most people need, just simple links from their BuddyPress profile to the users Social Media pages.