You can add the social media in the header by adding below code:
{%- if
settings.social_twitter_link != blank
or settings.social_facebook_link != blank
or settings.social_pinterest_link != blank
or settings.social_instagram_link != blank
or settings.social_tumblr_link != blank
or settings.social_snapchat_link != blank
or settings.social_youtube_link != blank
or settings.social_vimeo_link != blank
or request.page_type == 'article'
or request.page_type == 'blog'
-%}
{%- assign social_icons = true -%}
{%- endif -%}
{%- assign socials = "Facebook Twitter Pinterest Instagram Tumblr Snapchat YouTube Vimeo" | split: ' ' -%}
{%- if social_icons -%}
{%- for social in socials -%}
{%- assign social_link = social | prepend: 'social_' | append: '_link' | downcase -%}
{%- assign icon_link = social | prepend: 'icon-' | downcase -%}
{%- if settings[social_link] != blank -%}
- {%- include icon_link -%}
{{ social }}
{%- endif -%}
{%- endfor -%}
{%- endif -%}