If you want to convert a prefabAn asset type that allows you to store a GameObject complete with components and properties. The prefab acts as a template from which you can create new object instances in the scene. More info
See in Glossary instance into a regular GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary, you can use the Unpack command. Unity then unpacks the prefab instance into GameObjects but retains the original prefab asset.
To use the Unpack command to convert a prefab instance into a GameObject, perform the following steps:
Unity converts the prefab instance into a GameObject which no longer has any links to the original prefab asset. Unity also saves any overrides on the prefab instance into the GameObject.
The Unpack command only unpacks the selected prefab instance, and has the following effects:
To completely unpack a prefab instance and its nested prefabs, or to completely unpack a variant to its base set of GameObjects, select Prefab > Unpack Completely.