Hello,
Thanks for using our theme.
Check there topics – https://www.8theme.com/topic/get-product-brand-in-meta-data-while-exporting/ https://www.8theme.com/topic/where-are-product-brands-stored-no-field-for-brands-exported-in-wc/
we use next code to get brands by product_id =>
wp_get_post_terms( $id, ‘brand’ )
Regards