95 Buick Roadmaster won't start, no click and draining battery when I turn key please help

What makes you think the new battery is being drained? Are the battery cables connected to the right terminals?

Yes they are connected to the correct terminals, and after I tried to start the car I put a voltmeter on the battery and it is only reading 6 volts

Could the starter be bad and engaged and not letting it turn over or click??

Yes it could, But your not getting anywhere with 6 volts in the battery. A fully charged battery voltage is 12.7 DCV.

Did the battery even have a charge in it when you bought it? Sometimes a parts store would have to charge up a battery off of the shelf.

Yes I checked it, it was 12.4 volts when installed

You must have ben trying to start it for quit a bit or something is on in the car to drain the battery down to 6 volts, It may be that the starter needs to come out and be load tested. May be a bad starter.

OK thanks