How to display acf field values from home page on all pages?

ACF’s the_field() and get_field() accept several parameters, one of which is a post ID. So, you just need to get the ID of the page the field is on, like this:

<?php
$frontpage_id = get_option( 'page_on_front' );
the_field('contact_form_title', $frontpage_id); 

// For pages other than home
$page = get_page_by_path('some-page-slug');
the_field('contact_form_title', $page->ID);
?>

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