PQWL (Pooled Quota Waiting List) is a type of waiting list in Indian Railways reservation system. The chances of a PQWL ticket getting confirmed depend on various factors such as the total number of seats available in the train, the number of cancellations, and the number of passengers with higher priority waiting ahead of you.
However, based on the PQWL numbers you have provided (PQWL-3 and PQWL-4), the chances of confirmation may be relatively low as these are very low waiting list numbers. It is difficult to predict the chances of confirmation with certainty, but generally, the lower the waiting list number, the higher the chances of confirmation.
You can check the PNR status regularly as the status may change if there are any cancellations or if the Indian Railways decides to allocate more coaches to the train. You can also consider alternative modes of transportation or look for alternative trains with better availability.