To copy a page in WordPress, you can follow these steps:

1. Go to Pages and click Edit to open the page you want to copy.
2. On the WordPress block editor, click on the More tools & Options button and select Code Editor. Or, if you’re using the classic editor, switch to the Text tab.
3. Select all of the content on the page and Copy them by pressing the Control + C keys on your keyboard.

It's important to note that copying a page is different from duplicating a page. When you copy a page, it will only copy the base content of the page. However, it’s the best approach for editing just the content.