My dad has covid since 2 days, pcv is 48.9 and crp is 9mg/l? does he need hospitalization? and what should i to bring it to normal levels as he is home quarantined? pls help, it's urgent

Thank you for caring for your dad. That PCV is ok, the CRP is high but not terribly high. Hospitalization depends on his oxygen level and how he feels more than those numbers. I cannot say for him but am guessing he mostly needs good supportive care, as I am sure you are giving. Things to watch for are worsening of symptoms, high fever, or change in symptoms (like change in sputum or discharge).

If he has problem with breathing or his mental status seems altered, take him to a hospital. A month or so after recovery, get him a dose of Covid vaccine. I trust that you are vaccinated against Covid-19, if not get vaccinated. Wish you and your dad good health!