To show the map on the website, please install the plugin – WP Google Maps.
There is easier solution here.
Step by step
- Go to Appearance > Install Plugins
- Install the “WP Google Maps”

- Click “Return to Required Plugins Installer”

- Click Activate

- Go to Maps, Please enter the Google Key. Please create your own Google Key following the DOC

- Click Edit

- Enter address, click Add Marker, Click Save Map

- Copy the short code

- Create a new page, click BM Content Builder, add Text module
- Paste the short code into the Text module(code mode)
