Your store has a copyright notice in the footer of each page. As a best practice, the copyright notice should include the current year, and identify your company as the legal owner of the content on the site.
© character code is used to insert the copyright symbol, as shown in the following examples:
Long format example:
Copyright © 2013-2019 Magento, Inc. All rights reserved.
Short format example:
© 2019 Magento, Inc. All rights reserved.
Change the copyright notice
On the Admin sidebar, go to Content > Design > Configuration.
In the grid, find the store view that you want to configure. Then, click Edit in the Action column and do the following:
Under Other Settings, expand the Footer section.
In the Copyright box, enter the copyright notice that you want to appear in the footer of each page. Use the
©character code to insert a copyright symbol.
When complete, click Save Configuration.