Explain currrent and voltage in this circuit?
To measure the voltage "at" a point, you need to connect a voltmeter between ground and that point, not put a voltmeter in series with the rest of the circuit.

As drawn, all current through R1 and R2 also has to go through two voltmeters (V2 and V4). Since a voltmeter has very very high resistance, there's very little current flowing through your "circuit". The voltages you measure depend strongly on hidden assumptions of the simulator (like what's the resistance of the voltmeter and whether there's any parasitic conductance to ground from each node).