Hide a specific category from the shop

functions.php

function wc_hide_category_archive() {
	$hide_category = 'category-slug'; //Change this with your category slug

	if ( ! is_user_logged_in() && is_product_category( $hide_category ) ) {
		wp_redirect( home_url() );
		exit;
	} elseif ( is_product() && ! is_user_logged_in() ) {
		global $product;

		$taxonomy = 'product_cat';
		$terms = get_the_terms( get_the_ID(), $taxonomy );

		if ( $terms && ! is_wp_error( $terms ) ) {
			foreach ( $terms as $term ) {
				if ( $term->slug == $hide_category ) {
					wp_redirect( home_url() );
					exit;
				}
			}
		}
	}
}
add_action( 'template_redirect', 'wc_hide_category_archive' );