Hide products of particular categories being displayed on the Shop page only for guest users

functions.php

/**
 * Exclude products from a particular category on the shop page
 */
function ts_pre_get_posts_query( $q ) {

	if ( ! is_user_logged_in() ) { // Hide below mentioned categories for guest user
		$tax_query = (array) $q->get( 'tax_query' );

	    $tax_query[] = array(
	           'taxonomy' => 'product_cat',
	           'field' => 'slug',
	           'terms' => array( 'topwear' ), // Here add the slug of the categories need to be hide.
	           'operator' => 'NOT IN'
	    );


	    $q->set( 'tax_query', $tax_query );
	}
}
add_action( 'woocommerce_product_query', 'ts_pre_get_posts_query' );