Are there any benefits to amplify the signal for this case?
Here is a similar question, with 0.02 volt sensor into a 100X amplifier. Thus 2 volts output to the ADC, but in an assumed high-interference setup.
The conclusion is to ADD a LOWPASS RC filter before the ADC.

Go to this question, and scroll down past the question, and read the answer by "analogsystemsrf"

RC Lowpass Filter between Amplifier and ADC input