Step by step process of using this shortcode explained below.
1. Go to wordpress admin and select a page that you want to show walk score in it.
2. There is a walk score button in editor, so click on it.
3. You can use specific location latitude and longitude or address to show walk score for that location, it's recommended to using latitude and longitude fields.
4. Fill latitude and longitude fields or address field for that location.
5. Set Use property coordinates field to disabled.
6. Fill other fields of walk score if you like.
7. Click on insert button to inserting shortcode to page.
8. Update page.
9. Now walk score will shown in page.