Adding social icons within a header

Hello there.

I was wondering if anyone could instruct or give me guidance in doing something particular in my website : adding social media icons within an already existing header bar, to make it look like the very top of this webpage :

https://stjudesp.org/

You see the blue header bar there on the top-most part? With the Facebook, Twitter, and Instagram social media icons on the left-most side, and the phone icon before the phone number, followed by the ‘map pin’ / location icon next to the address on the right-most side?

I just would like to know how I could do that in my own website… If anyone could let me know how, that would be absolutely fantastic!

Thanks very much in advance!