Is there any relation between a Exposure & Flicker I am trying to understand if there is any relation between Exposure(Manual/Auto) function of a Camera and Flicker effect that might be visible in a video shot by that camera?

If one has to do flicker removal, does it have any commonality with the Auto exposure parameters like Exposure time, exposure gain? Can those parameters in anyway tuned/changed to remvoe flicker effect?
Video is refreshed at a certain rate, depending on the display device, between 24 to 60 FPS. Any time you shoot video a a faster shutter-speed you risk the camera taking shots will the between refreshes.

If you take a photo with a slower shutter-speed, say 1/20s, then the camera will capture an entire refresh cycle and the flicker will go away. Use shutter-priority (S or T mode, depending on your camera), Manual (M) or time-aperture (TAv) mode to control shutter-speed yourself.

PS: I realize your question is slightly ambiguous. I am assuming you are taking a photo of something that is playing a video. If you are shooting a video of a video, then your question is off-topic here.