Hi Mike,
I’m sorry about the delayed response here! You can find the template files for the map view in wp-content/plugins/events-calendar-pro/src/views/map. You can customize any of these templates by creating the following folders in your child theme:
tribe-events > pro > map (so your file path will look like /wp-content/themes/[your-theme]/tribe-events/pro/map)
Next, copy the templates that you want to edit into your new “map” folder. These will override the default template files from the plugins. The shortcode uses the same templates for map and other views as do the views on your main events page, so these changes will be applied anywhere on your site that you are using the map view.
Please let me know if you have any questions!