YouTube does not support direct subscription transfer, but with Google Takeout and a careful third-party tool, you can migrate your list in under 10 minutes. If you value security above all else, set aside an hour and do it manually.
Until YouTube builds this feature natively (don’t hold your breath), these are your best options. youtube subscription transfer
The short answer is . YouTube does not offer a built-in "Transfer Subscriptions" button. YouTube does not support direct subscription transfer, but
If you’ve ever tried to switch between YouTube accounts—or migrate from an old Google account to a new one—you’ve probably asked the same question: Can I just transfer all my subscriptions in one click? youtube subscription transfer