It is not legal to sell your Fortnite account… but that’s not to say that it doesn’t happen. The Terms of Service very clearly state that “You may only access Fortnite through your own account. Users do not own their accounts, and gifting or otherwise transferring of accounts or access keys is prohibited”.
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.