Then you do not has a series resistor to limit the current and the LED will instantly burn out.
Then if I connect a resistor to the ( - ) pin of the LED, would this resistor keep the voltage that goes to the LED low?
The series resistor can connect from the (-) pin if the LED to the (-) terminal of the battery
OR from the (+) pin of the LED to the (+) terminal of the battery.
The LED has its own voltage drop. The resistor does not reduce the voltage, it limits the current. You can use a 1000V power supply feeding a resistor in series with an LED and if the resistor value is calculated correctly then it is fine except the resistor will get very hot.