The copyright notice also tells site visitors who own the website, though it sometimes also includes information about the company that developed the site or the template the site owner used. You can change copyright text. Do the following step. Refer the screenshot.
1. How to Change Copyright Text?
Go to => Appearance => Customize => General Settings = > Footer Copyright Settings
Here you can find Copyright text input field, Enter your text here then Save & Publish. Refer the screenshot.