How many releases and contractions should I do in kegel exercise per session & after how many months should I notice differences & does it help in sex?

10 is good. Ten contractions 10 times a day is often helpful for urinary incontinence. Lowering stress and self confidence boosts testosterone which increases sexual responsiveness. Kelly mcgonigal's book the will power instinct , 2012 helps with life style changes that promote health.
Kegels. Do 15-30 per set. Do it as many times a day as you can (3-5). The body heals in cycles of 90 days so hopefully after 90 days you would notice a difference and yes it helps in sex.