Guys, do you think top 50 coins will reach there ATH again with next bull run??? Also share your views about any coins out of top 100 which can grow 50x in next bull run

As much as I wanted to forecast the future of cryptocurrency, I can't because my crystal ball had been shattered this last bear market.
Your question is very broad since you do not specify the date of the bull run you are asking. The cryptocurrency had been on a Bull run since Dec. and yet not much of those cryptocurrencies ever reached half of their ATH so I guess the best answer would be none.