capabilities – Show exstra product charges on single product web page

I discovered this piece of funtion right here. It shows exstra product charges on cart web page. I want to know the way may I show it on single product web page, I imply earlier than including it to cart. And it could be good if I may add a discover on single product web page that will say: ” An additional payment for “Service payment” shall be charged out of your account”. I attemped to do following however that did not work in any respect.

 $woocommerce->cart->add_fee || WC()->cart->add_fee( 'Ticket Concierge Cost', $spfee, true, 'customary' );

Thanks in recommendation.

complete code block:

// add product charges
perform df_add_ticket_surcharge( $cart_object ) {

    world $woocommerce;
    $specialfeecat = 16; // class id for the particular payment
    $spfee = 0.00; // initialize particular payment
    $spfeeperprod = 0.05; //particular payment per product

    foreach ( $cart_object->cart_contents as $key => $worth ) {

        $proid = $worth['product_id']; //get the product id from cart
        $quantiy = $worth['quantity']; //get amount from cart
        $itmprice = $worth['data']->worth; //get product worth

        $phrases = get_the_terms( $proid, 'product_cat' ); //get taxonamy of the prducts
        if ( $phrases && ! is_wp_error( $phrases ) ) :
            foreach ( $phrases as $time period ) {
                $catid = $term->term_id;
                if($specialfeecat == $catid ) {
                    $spfee = $spfee + $itmprice * $quantiy * $spfeeperprod;
                }
            }
        endif;  
    }

    if($spfee > 0 )  WC()->cart->add_fee( 'Ticket Concierge Cost', $spfee, true, 'customary' );
    

}

add_action( 'woocommerce_cart_calculate_fees', 'df_add_ticket_surcharge' );