A 25.0 mL of 6.0 M battery acid H2SO4 is neutralized with 0.234 M
NaOH solution. Calculate the volume of sodium hydroxide needed to
Neutralize the acid.

Simple equality.

M1V1 = M2V2

First write a balanced equation of the reaction. From here, u will get the moles of the acid and alkali. Now use this equation: MV/n of acid = MV/n of alkali. Here, M is concentration V is volume, and n is moles. Solve the equation to get your answer.