You can't.
See the related link below for a run-down of limits in the Twitter Help Center.
As of 2021, Twitter allows users to follow up to 400 accounts per day, with a maximum limit of 5000 accounts in total. This limit is put in place to prevent spamming and to maintain a balance between following and followers.
There is not an limit
You make a twitter account and then follow him
190,000,000 people follow Twitter.
I'm pretty sure there isn't a limit because some celebrities are following over 100 000 people. But if you follow many people at once (I'm not sure what the hourly limit is) you will have to wait an hour until you can follow any more.
It's when celebrity's follow random fans on twitter.
Just click on the follow button to follow back that twitter user.
No, Selena Gomez does not follow that Twitter account.
You can't "make" celebrities follow you on Twitter. They have the choice to follow whomever they like.
She doesn't have Twitter.
sorry i do not have twitter.