Why am I getting a reading of 119.7 volts neutral to ground?
Hot and Neutral reversed - as the "hot to ground = 0V" reading confirms.

The Brass-colored screw gets the black/hot wire, the Silver-colored screw gets the white/neutral wire, and the wider blade looking at the outlet is neutral. That's left if the ground is down, right if the ground is up.

The Green-colored screw gets the green/bare ground wire.

A $5 or so plug in outlet tester (might as well get the GFCI-Testing version) will confirm these things easily without needing three tests and without potential for error in what is supposed to be what.