When the form is submitted that will save a custom field in wp_postmeta with the key 'denominazione-social'.
This is different than normal Types custom fields, which are saved with a key that uses a 'wcpf-' prefix.
You can output it when displaying the post (whether singularly or as part of the output of a View) using the wpv-post-field shortcode that can be used to output the raw value of any custom field (not just Types fields), e.g.