Missing option to create WP User from contact
This is a duplicate of this post WordPress: Creating new WP Users from Civi Contacts

On line 22 set it to true https://github.com/christianwach/civicrm-wp-profile-sync/blob/master/civicrm-wp-profile-sync.php#L22

define( 'CIVICRM_WP_PROFILE_SYNC_BULK', true );

The confusion is that you need to do a search action from either Advanced Search or Search Builder, not the actions button in the contact summary screen.