The blue tick on Instagram indicates that a user has been verified by Instagram as an authentic account for a public figure, celebrity, or brand. To request verification, you can follow these steps:

1. Ensure that your account meets the eligibility criteria: Instagram requires that your account is active and complete, has a profile picture, a bio, and at least one post. Additionally, you must have been active on Instagram for the past six months, and your account must be in good standing without any violations of Instagram’s rules.
2. Go to your profile and tap the three horizontal lines in the top right corner to open the menu. Select “Settings”, then “Account”, then “Request Verification”.
3. Fill out the verification request form: Instagram will ask you to provide some information about yourself or your brand, including your full name, a photo of your government-issued ID or official business documents, and other supporting materials, such as news articles or your official website.
4. Submit your request: After you fill out the verification request form, tap “Send” to submit your request. Instagram will review your request and notify you whether your account has been verified or not. The verification process can take several weeks or even months, so be patient and keep checking your email for updates.

Note that the verification process is not guaranteed, and Instagram may deny your request even if you meet all the eligibility criteria. Instagram may also revoke verification if your account no longer meets the eligibility criteria or if you violate Instagram’s rules.