Clean up 98 images and edit exposure and brightness

Hi, I have 98 images that need editing,

58 are flat shots that need, which background cleaned. I also want to create consistency with the exposure as the lighting used was not great. I just want the background to be white so any suggestions on how to do it would be appreciated.

the remaining images include a model using natural light, but ask I am not a photographer the exposure and contrast needs adjusting. if there's a way to brighten without intensifying the saturation that would be great.

Timeline wise tomorrow the latest.