Display Sale End date in single product page

Hi @janmalagucute, you can add below code to functions.php in your theme folder:

add_filter( 'woocommerce_get_price_html', 'custom_price_html', 100, 2 );
function custom_price_html( $price, $product ){
    global $post;
    $sales_price_to = get_post_meta($post->ID, '_sale_price_dates_to', true);
    if(is_single() && $sales_price_to != "")
    {
        $sales_price_date_to = date("j M y", $sales_price_to);

        return str_replace( '</ins>', ' </ins> <b>(Offer till '.$sales_price_date_to.')</b>', $price );
    }
    else
    {
        return apply_filters( 'woocommerce_get_price', $price );
    }
}