You'd be extremely lucky if a replacement screen was all you needed. While putting it in IPA was a better idea than putting it in rice, the fact that you just let it soak instead of opening the device and scrubbing away any corrosion leads me to believe that this phone will develop other issues over time. Ideally, the board must be properly decontaminated. Even then, there is never a guarantee that that latent issues won't come up in the future.
Was the pool chlorine or salt based?