1. In your Wordpress admin go to appearance – widgets.
2. There is a EPL – Walk Score widget in widgets list.
3. Attach this widget to a sidebar that this sidebar is exists in single listing page.
4. In widget settings set Use property coordinates to enabled.
5. Leave latitude, longitude and address fields to empty.
6. Set other settings of walk score widget like height, title, layout, amenities.
7. Hit save button to saving widget settings.
8. Now walk score widget will shown in only listing pages and this widget will not appear in other pages.