Please help me with this flare, how to achieve this in rendering?
1) Small bright pin light in the hdri
2) photoshop
https://clvid1.bluestone.com/output/mp4/BIVS0025R01-VIDEO-26553.mp4/BIVS0025R01-VIDEO-26553.mp4
check this video. he did the same in video
That highlight you are seeing is the reflection of a light source. As Matt stated, you can achieve it by adding a pin to your HDR image. Target where you want it to land and adjust the size and brightness to your liking.
thanks for help, i have tried adjusting pins. Still working on it
You're getting there. If you want it to be the same as your example, make sure to use a round pin and scale it so that you see it all in the reflection. Maybe soften the edges of the pin too.