How to make a aged YouTube channel

Please anyone know how to make a aged YouTube channel

The best option is a good anti-detect browser, profile in the browser with a separate proxy connected. In addition obviously a clean email address (which would be good to provide to the client along with the account). And then you keep the accounts until they are aged enough to sell. If you want to grow it, then just remember to post regularly.

What makes it "good" in your eyes?
How aged are we talking about?

You would need to let the YouTube account "age", meaning that it would need to sit until you now want to use it.