Thanks for reaching out! You'll need to have at least one of the credentials associated with your account to recover it with these steps: https://goo.gl/v7CdWx . Let us know how it goes.
Channels created before 2009 are called legacy channels which may or may not be connected to a google account. So in order for you to access your channel, you'll first have to link it to a Google account by following the steps mentioned before. Keep us posted.