if you are handling quarantine or in isolation, with known cases then you DO need to wear PPE. If you think you may be at risk, wear one.
If you are not, and its safe, then you ought to be fine, just dont go to close to people if possible.
in shops many have put up perspex screens. its like a sneeze guard that you would have over salad bars. I dont know about you but many people have to be face to face with hundreds of people EVERY day in their work. How do you think they feel?
if your work consists solely of looking at a computer screen and you dont have to share your computer then I would say you are safe. But lots of people do not have jobs like that. surprise.