Building an electret microphone amplification circuit, it's not working
That cannot work.  

You have a couple of things wrong:


The electret microphone needs a power source.  You have it connected to an input of the opamp - no power to be had there.
You have the ground of the microphone connected to a voltage divider built of really high value resistors.  Even if you had the microphone + connected to power, it still couldn't work because almost no current can flow through the ground connection of the microphone.




The rest looks really funky, too.  You seem to be trying to build some kind of differential amplifier.

Stop.  Search the web for a simple electret microphone amplifier circuit.  There's about a million out there.  Find one.  Build it.  See how it works.  Compare it to what you came up with.  See where the differences are.