Getting a blue check (verified badge) on Instagram is a way to let people know that an account of public interest is the authentic presence of the notable person or brand it represents. To get a blue check on Instagram, you will need to submit a request for verification through the app. Here are the steps to do that:
Go to your Instagram profile and tap the three lines in the top right corner.
Tap Settings, then tap Account, and then tap Request Verification.
Fill out the verification form by providing your full name, your account username, and a copy of your government-issued ID (passport, driver's license, national ID card).
You also have to provide a proof of your notable public figure or brand representation. A list of documents that can be used as proof include business registration, articles of incorporation, media coverage, or other forms of official identification.
Once you have completed the form, tap Send.
Instagram will review your request and will notify you of the outcome. Keep in mind that getting verified is not guaranteed and that Instagram only verifies accounts that meet certain criteria, such as being active, complete, and in good standing. If your request is denied, you can reapply after 30 days.
It's also worth noting that Instagram may also verify accounts that are considered to be at high-risk of impersonation, regardless of their following.