Top SKU shortcode

// Add Shortcode
function TopSKUs() {

	<?php
	    
		$args = array( 
			'post_type' => 'post_top_SKU',
			//'category_name' => 'Shop Parts',
	        //'category_name' => 'Top SKUs',
	    	'posts_per_page' => 10 
		);
	    ?>
		
	   <?php  $loop = new WP_Query( $args ); ?>
	    <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
	        <h3><?php the_title(); ?></h3>
	
	
	        <?php 
	            $campaign_name = get_post_meta($post->ID, 'campaign_name', true); 
	            $brand_name = get_post_meta($post->ID, 'brand_name', true); 
	            $part_name = get_post_meta($post->ID, 'part_name', true); 
	            $sku_image = get_post_meta($post->ID, 'sku_image', true); 
	            $sku_url = get_post_meta($post->ID, 'sku_url', true); 
	        ?>
	
	        <p> Campaign Name : <?php echo $campaign_name; ?></p>
	        <p> Brand Name : <?php echo $brand_name; ?></p>
	        <p> Part Name : <?php echo $part_name; ?></p>
	        <p><img src="<?php echo $sku_image; ?>" alt="<?php echo $brand_name; ?> <?php echo $part_name; ?>"></p>
	        <p> Image address : <?php echo $sku_image; ?></p>
	        <p> SKU URL : <?php echo $sku_url; ?></p>
	        
	
	    <?php endwhile; ?>

}
add_shortcode( 'Top SKU', 'TopSKUs' );