@acf-support
Hi James
An Update!
After further investigation i see that fields in widgets are stored as options in the wp_options table. I was able to pull the values using the following code:
echo get_option('widget_' . $args['widget_id'] . '_field_name');
The only thing is that field value is not changing live in Customizer, only after i hit the “Save & Publish” button and refreshing the page on the front end.
More work needed with get_option().