Calculating total voltage/current for 3-phase?
I will like to know what is the total current generated, as well as the voltage value. Additionally, I want to find the power too.


The total current is zero as what goes out on one phase must come back on the others. Your concept of "total current" doesn't work on a three-phase system.

You could add the currents (taking the power-factor into account) to work out the equivalent single-phase current that would produce the same power.


  What I am thinking is that the 3-phase current and voltage will just average respectively and then applying P = sqrt(3) * pf * I * V to find the power?


As @Andyaka has pointed out you are giving the phase to neutral voltages so you'll use \$ P = IV \times pf \$ where pf is the angle between the single phase voltage and current. Your approach will work if the system is balanced. If not then the correct approach to finding total power is to sum the powers in each phase.

I think you could round down your measurements to three significant digits. That sort of precision is unlikely.