Is there any way to copy layer from one scene and paste it into another scene?
There is no dedicated copy/paste layer functionality but I can think of 2 ways to go about this.
If the content of the layer does not change, it is always the same on each level, you can store the layer in an external layout and create the objects from the external layout on each scene.
If the content of the layer does change, it is different on each scene in some ways then you can use the storage events to save the properties of the content on the layer like position, scale, animation, text…etc of objects and then load this information and apply on each object at the beginning of each scene.
Unfortunately I don’t have time to explain this in any more detail. There are examples included with GDevelop that demonstrate how to use external layouts and how to use the storage events.