Display Stock Quantity/Status @ WooCommerce Shop Page article from https://www.businessbloomer.com/woocommerce-add-stock-quantity-on-shop-page/ does not seem to work..
add_action( 'woocommerce_after_shop_loop_item', 'bbloomer_show_stock_shop', 10 );
function bbloomer_show_stock_shop() {
global $product;
echo wc_get_stock_html( $product );
}