How to Hide Search Bar in Header WooCommerce Storefront Theme?

Hide in Entire Site

Just go to Appearance > Customize

Click Additional CSS

and insert this code

.site-header .site-search {
display: none;
}

Hide in Specific Page

For each specific page, simply insert the following code.

https://gist.github.com/1ed669c2a2d4c7e005f8300ca6e2cc4f