Halving events have frequently been associated with increase in price of bitcoin with significant upward momentum both before and after halving. Bitcoin halving often generate increased market attention and hype. Expectation of lower supply and likely price increase may fuel positive feelings amongst investors and traders.
Well I can boldly tell you that no one actually knows the correct answer to that question and answers you will get are speculation on stats gather from previous halving event which if you ask can be close to the desired answer. The halving period comes with so many drama and so many investor are currently waiting for the halving to come and go and to see if there is actually going to be a significant rise to the price.