Link is something you can share on your social networks to lead your audience to your Instagram profile. For example, you have twitter account but you want to point your followers attention to your Instagram - you need to tweet the link of your profile. 🔗👫 Pretty simple.
HOW TO GET YOUR INSTAGRAM LINK
First of all you need to find your username. It displays at the top of your Profile page at Instagram app. Sometimes you may use your username to login into Instagram.
Then you need to put your Instagram username right after this:
https://instagram.com/<YOUR USERANAME>.For example, my username is @danokhlopkov. That is why by Instagram link is https://instagram.com/danokhlopkov. If you click on it - you will be redirected to Instagram to my profile. That is how links work!