Four of us are on a shared well at your house you have 38 psi you need to raise the pressure to 60 psi do you need a pump and pressure tank?

If your all on a well, you already have a Pump and a Pressure Tank. If you can't get that Pump to make 60 psi, there is something wrong with it and it will need a Serviceman to diagnose the problem. I suggest a Well Driller or Pump expert.