How to get menu id ?

ok no problem
<?php wp_nav_menu( array( ‘container_class’ => ‘menu-header’, ‘theme_location’ => ‘primary’ ) ); ?>
i used this function to fetch menu in my site. here i need to make if else check that if it is service page the hyperlink of contact us menu will b different. for this purpose i need menu id

thanks for quick reply lol hahah