Kai Hi 👋
You'll have to wait until bunq has approved your application, don't know the time it normally takes for business account tho. But it shouldn't take that long, presuming the provided information is correct.
You can login to you business account by tapping and holding on the account tab, so you can switch between your personal and business account.
If it takes multiple days, you can always contact support to see what's up. But that shouldn't be necessary.
Have a nice day! 🌈👍