Apologies, but at this time you cannot pay a bill directly from a Vault. However, if you want to pay a bill using funds from a specific Vault, simply select 'Vault transfer' and within seconds you can move the funds to your overall SoFi Money account balance.
Then, feel free to set-up bill-payments through your SoFi Money cash management account. Simply log into your SoFi Money cash management account and select 'Pay a bill.'