Create a Child Template
Add to Function.php

You can add more than one String

add_filter( 'woocommerce_shipping_package_name', 'custom_shipping_package_name' );
function custom_shipping_package_name( $name ) {
return 'Delivery';
}
 
function fix_woocommerce_strings( $translated, $text) {
// STRING 1
$translated = str_ireplace( 'Shipping', 'Delivery charge', $translated );
//	$translated = str_ireplace( 'Subtotal', 'Donation', $translated );
 
return $translated;
}
add_filter( 'gettext', 'fix_woocommerce_strings', 999, 3 );