Voltage value at opamp exit
The question is: is the voltage at blue probe the same as at green
probe?

If there is no external load on the node that the green probe connects then yes, they will be the same voltage. This is because there is no current through R4 when there is no load at the green probe node.

I can calculate current trough R2 and R3 but i do not know how to
calculate current at opamp exit

The op-amp output current (in the absence of any load on the green node) IS the same current that flows through R2.