how to display gutenberg editor in a view

I’m not sure i completely understand what you want to do… you want to use the block editor on an admin page of your page, but then use it to edit the content of an existing post?

I’m not quite sure if this can work as you intended. However, there IS an experimental way to include a seperate instance of the block editor on an admin page. Please use this tutorial on the wordpress developer portal to create this.

Happy Coding!