products "read more" button is not working in woocommerce store
There is many different errors in your code and your question is not so clear. So you can:
1) To add an additional button (below existing add-to-cart button):
add_action('woocommerce_after_shop_loop_item', 'replace_add_to_cart' );function replace_add_to_cart() { global $product; echo '<br><a class="button" href="' . esc_attr( $product->get_permalink() ) . '">' . __( "Read more" ) . '</a>';}Code goes in function.php file of your active child theme (or theme) or also in any plugin file.
Tested and works.
2) Replace add to cart button using the woocommerce_loop_add_to_cart_link filter hook this way:
add_filter( 'woocommerce_loop_add_to_cart_link', 'replace_loop_add_to_cart_button', 10, 2 );function replace_loop_add_to_cart_button( $button, $product ) { return '<a class="button" href="' . $product->get_permalink() . '">' . __( "Read more" ) . '</a>';}Code goes in function.php file of your active child theme (or theme) or also in any plugin file.
Tested and works.