how do i move events to a new scene
Objects, events, and layouts are all scene specific.
You either need to make your objects again, or need to go back to your other scene and make them into global objects.
Events you can just copy and paste, or if you’re going to reuse the events numerous time, you could set up an external event sheet and use that: Link events [GDevelop wiki]
is there any way to just copy the whole event
You can duplicate the scene by clicking on the three dots, after duplicating rename the new scene.
Make changes, as required, in the new duplicated scene. Everything will be copied and you will have to change only UI part for making this duplicated scene different from the previous scene.