Cant see how to show fields to display in a block. Was ok in non-block theme

Since switching to a block theme, I can’t figure out how to get fields to display in a block under Twenty Twenty Four theme.

My old custome theme with ACF it was straight forward. I put the following code in the relevant template:

       <?php 
        if (get_post_meta($post->ID, 'service_date', true)) {
          $service_date = get_post_meta($post->ID, 'service_date', true);  
          // $currentDate = date('d/m/Y');           
          echo '<span class="service-text">Service:</span>';
          echo '  ' . $service_date; 
        }   

        if (get_post_meta($post->ID, 'service_time', true)) {
          $service_time = get_post_meta($post->ID, 'service_time', true);
          echo ' - ' . $service_time;
        }

      ?> 

I can’t figure out how to do this under Twenty Twenty Four theme, and I can’t find a codex anywhere that explains how to do it. Any help would be appreciated.