You can submit a request for a channel verification once you have 100,000 subscribers. It looks like your channel isn't eligible yet.
Troubleshooting
- Sometimes our systems take a few days to update. If you've recently reached 100,000 subscribers, but can't open the application form, check back in a few days.
- Make sure that you've signed in with the email address for the eligible channel. Click your profile picture in the top right-hand corner and choose that account.