When I go to find my details under USD balance in a new Business Transferwise account, I see the following:
“Get account details for 16 GBP
Before you can get an account number, ACH routing number, wire routing number and SWIFT/BIC, you’ll need to finish setting up your account.”
Though actually, when I switch to my personal account, this doesn't seem to be the case. I just have to load a balance to my USD account to obtain the details.