Orly 3 is non-schengen only, so TP does not operate from there.

TP currently operates from Orly 2 (https://www.parisaeroport.fr/en/pass...ing-from-paris)
I flew ORY-LIS the week after the lockdowns started when everything was operating from Orly 3/4, rather than Orly 1, as was the case 10 days prior.

You may have to go through passport control on arrival and then access the departure lounge (no departure passport control, selective arrival passport control even from Schengen countries)
At Orly 4, no lounges were open, but there were a couple of takeaway places that remained open. No restaurants were open at the time.

If I recall correctly, ORY-2 has a PPass lounge, though ORY's airport-run lounges are nothing to write home about with almost no food and ok drinks. Not sure if that particular lounge is open.