You can send to any address using this form (link in user menu): https://memo.cash/send
Wait is it? What kind of wallet? BSV? BCH? Both? What kind of wallet does memo use? I thought it's using both simultaneously? What kind of wallet outside of memo could I send to?
That's for your ABC coins though, if you want to sell both then you'll probably have to turn off split protection, make a long post on SV, and then send your coins from each wallet
Open an account at an exchange if you want to cash out. Go to your deposit/wallet page, look for BCH, and click deposit. Legacy addresses won't have colons (:), send to those and sell