CODE EXAMPLE FOR PHP

how to get woocommerce category image

// verify that this is a product category page
if ( is_product_category() ){
    global $wp_query;

    // get the query object
    $cat = $wp_query->get_queried_object();

    // get the thumbnail id using the queried category term_id
    $thumbnail_id = get_term_meta( $cat->term_id, 'thumbnail_id', true ); 

    // get the image URL
    $image = wp_get_attachment_url( $thumbnail_id ); 

    // print the IMG HTML
    echo "<img src='{$image}' alt='' width='762' height='365' />";
}