Soccial buttons from one theme to another

Hi,

I would like to add the Social button from this theme:
https://wordpress.site5.net/boldy/

to my theme: https://www.vooshthemes.com/gallery/saburo/

I have tried to add some code to the header.php file ma with no success till now.
Do you know what code do I need to add in order to making the button visible on my site?

thanks!