Hello @mandeepdebnath,
First of all thank you very much for using the travel eye theme.
Now to display the social icon on the top header please follow below given steps:
Step 1: Create the social menu by going to Admin Panel > Appearance > Menu by including your desired custom links:
Screenshot:
https://prnt.sc/jge90m
Step 2: Assign the created social menu to the social menu location either from Admin Panel > Appearance > menus or from Admin Panel > Appearance > Customize > Menus > Menu Location.
Step 3: Now got to Admin Panel > Appearance > Customize > Theme Option > Header option and enable the option “Show Social Icons”.
Hope this helps.
Best Regards!!