This shortcode allows you to add a dynamic date (a date that changes automatically). The shortcode is useful for the Footer Copyright section:
This shortcode will display the current year: 2020.
If you want to display the year of creation of your site in combination with the current year, use the following shortcode:
This shortcode will display: 2015 - 2020.
These shortcode should be added via Appearance > Customize > Footer Bottom in the respective textarea.