Yes you can play pickleball with a torn meniscus but it is not recommended.
If you have a torn meniscus it is important to see a doctor to get it checked out.
Depending on the severity of the tear you may need surgery to repair it.
Even if you don’t need surgery you should take it easy on your knee and avoid activities that put too much stress on it.
Playing pickleball with a torn meniscus is not likely to make the injury worse but it is important to listen to your body and not push yourself too hard.
If you are in pain stop playing and seek medical attention.