FMOD Sound Event Asset
The sound event asset represents a single FMOD sound event. An event typically represents an actual sound, but may also be something like a reverb effect. Sound events are very versatile, for details refer to the FMOD documentation.
You don't create sound event assets. Instead, when you transform a sound bank asset, for every event in the FMOD sound bank, one sound event asset appears in the asset browser.
Sound event assets are virtual assets, they don't have a representation on disk. They mainly exist as a UI element, such that you can browse for and select them in the sound event component.
You can also instantiate sound events by dragging a sound event asset from the asset browser into a scene. This will automatically create a game object and attach an FMOD event component.