You can usually reduce how distracting it is, but if the area is truly blown out, you cannot recover the original detail that was clipped in camera.

In Lightroom, a simple approach is to make a generous local adjustment over the bright area and lower Highlights and Whites to help it blend better with the surrounding background.

In Photoshop, you have more advanced retouching options, including trying content-aware fill or similar repair tools, but results can be unpredictable because there’s no real image detail left in a blown-out highlight.

So the practical goal is not to “restore” what was there, but to make the bright patch less noticeable.

Also consider whether removing it is actually desirable: the visible light source may help explain the scene lighting. If you want to avoid this in future shots, reframe or reposition the camera so the spotlight or flare is outside the frame.