Maybe there are different recommendations where you live, but here in Sweden and most of the hits on a web search suggest max dosage of paracetamol is 4g/day spread out.
Upper tolerable dosage isn't as simple as one number for everyone. How much someone can take depends on how long someone takes it, their relative health and their mass dosage (mg/kg). I could take 2g c.i. (6g/day) for weeks (114 kg, large healthy liver, younger) but a little grandmother (40 kg) couldn't.