Go to Calendar.google.com
Scroll down to find the calendar you want to share.

Click the 3 dots and go to settings.
Scroll down the settings page and you will find the public URL.
Copy that URL to share via email.

Go to Calendar.google.com
Scroll down to find the calendar you want to share.
Click the 3 dots and go to settings.
Scroll down the settings page and you will find the public URL.
Copy that URL to share via email.