To view and share your custom Google My Maps, you'll need to first create the map. Click on the "Create" button in the top right corner of any map in Google My Maps, then select "Custom" from the dropdown menu.
Once you've created the map, click on the three vertical dots in the upper right corner and select "Share." This will allow others to view your map by entering their email address or clicking on a link that you share with them. You can also choose to share the map by saving it as an HTML file.
One of the most useful features of Google My Maps is its ability to be customized. You can add and remove layers, change the colors, and even add your own markers and styles. To access these customization options, click on the "Edit" button in the top right corner of the map.
Once you've customized your map and shared it with others, they can view it by clicking on a link that you share with them. Alternatively, they can also access your map by saving it as an HTML file and opening it in their web browser.
Reference: https://www.google.com/maps/d/viewer?mid=1xD4_QEfWJXnyxBsnkmx1-7W-tDaCV6wO
https://www.google.com/maps/d/viewer?mid=1xD4_QEfWJXnyxBsnkmx1-7W-tDaCV6wO