In your theme’s file functions.php:
add_action('wp_enqueue_scripts','STACK_356524_add_css_js_on_page',99);
function STACK_356524_add_css_js_on_page(){
global $post;
if($post->post_type=='page') { // check if the current wp object is a `page` also is_page() can be used: see https://codex.wordpress.org/Conditional_Tags
wp_enqueue_script( 'js_handler', 'url_of_your_script', array(), '' );
wp_enqueue_style('css_handler','url_of_your_style',array(), '1.0.0', 'all');
}
}
Up to you adjust the correct path to the .css and .js you need to enqueue, you can have a look at the source page where the scripts and files are present and use that string.
More granular adjustment can be done ( versioning, dependencies -I.E. jquery or even enqueue only on specific pages -i.e: if( post->ID ==12345){}.
For more info:
https://developer.wordpress.org/reference/functions/wp_enqueue_script/
https://developer.wordpress.org/reference/functions/wp_enqueue_style/