You can withdraw the XRP that you have in your Bitso account towards any other wallet, by doing the following:
Go to the withdraw XRP option in your Bitso account at: https://bitso.com/withdrawal/ripple
On the displayed page enter
The XRP amount that you wish to withdraw
The XRP address to which you wish to send your XRP, which is a long chain of alphanumeric characters
Do not forget to enter the Destination Tag
Your transaction NIP
Done! If everything was done correctly, your withdrawal will be processed in just a few more moments.
The minimum XRP withdrawal amount is 1 XRP. Remember to always send XRP to an XRP account or vice versa. Remember to always enter the Destination Tag. It is not possible to send XRP from one Bitso account to another Bitso account, only to external accounts (wallets). Bitso accepts no liability for the loss of XRP due to poorly executed transactions.