Hide the progress count on the Site Health screen

functions.php

<?php
/**
 * Hide the progress count on the Site Health screen 
 */
function mytheme_load_custom_wp_admin_style() {
	$current_screen = get_current_screen();

	if ( strpos( $current_screen->base, 'site-health' ) === false ) {
		return;
	} else {
		echo '<style type="text/css">.health-check-title-section .site-health-progress {display:none;}</style>';
	}
}
add_action( 'admin_print_styles', 'mytheme_load_custom_wp_admin_style' );