Youtube channel

You can sell it here on BHW directly in marketplace,
but bare in mind that youll need to purchase ider
marketplace access or upgrade your account to
junior vip first. Find on forum help what you need
to do to be able to open marketplace thread or
fullfill requested 100 posts rule in order to be able
to upgrade your account to junior vip.

If you have a good YT account with lot of subscribers
and views you can sell it here for good money and
pay off your investment in marketplace access or
junior vip upgrade.

GLWS.

If you have a youtube channel making decent monthly income, it is not hard to find a buyer. You can sell through a broker.

you can sell here
what topic, how many views, the price depends on it

if you have a lot of subs, of course

What is the niche?