Screen not working but touch works

Hi my iPhone is kinda working on the edge.

First thing that went bad was battery life. I wanted to change the battery but I didn’t have the money for it at the time so I got used to shorter battery life.

Later the battery started being puffed. So it lifted the screen a little. I did not notice it at first.

After I had the phone at the water park I noticed that water got inside from behind the screen. The phone was boot looping all day. On the next day it started working again but Face ID was not working anymore and neither the silent button.

Two months later the screen just randomly died. I was on the phone texting my friend. Locked the phone. Two minutes later I got a text so I looked on my phone and the screen was black. I thought that the battery died, but I turned on flashlight somehow.

So I can’t see what I’m doing on the phone, but it is working. I don’t know what to do.

I opened the phone since the seal was broken already. Took off the screen. Cleaned the contacts with some isopropyl alcohol. Didn’t help.

Should I replace the screen?

Is it worth to fix the phone?