What you need from your business VPN will, of course, depend on your business.
If you're a sole trader with little infrastructure set up, all you really need is quality personal VPN. We'd recommend ExpressVPN as it works all over the world, and is incredibly reliable and secure.
However, if your business is a little larger and has centralized data, a more dedicated business VPN will suit you. You'll want a static IP so all your staff can access your restricted data, plus you might want to be able monitor and restrict your staff's activity online.
Here, we'd strongly recommend Perimeter 81, as it delivers more than just a VPN, and provides exceptional protection for just about every aspect of your business.