According to Instagram, to help reduce spam, Instagram does not allow anyone to follow more than 7,500 people. Regarding hourly limits, we find that with new accounts that only been active for a few months, you can only follow/unfollow about 20 users an hour, and a maximum of 100-200 users in a day.
What happens after 10k followers on Instagram?
Once you have 10k followers, Instagram will make it easier for you to get people to your website via Stories with the swipe up to link feature. Swipe up is the only way to get a direct link from your Instagram to your other web properties. And, it’s available in STORIES, if you have 10k followers.