Why it exists
Verification proves the email address is really yours. Password resets and important notifications go to that address, so it has to work.
The link didn't arrive
Check the spam folder, and make sure you're looking in the mailbox of the exact address you registered with.
About resending
You can request a new verification email from the app. The platform limits how often it can be sent — if it says to wait, give it a moment and try again.