MacBook wont turn on after water spilt

I accidently let my computer got water dripping from the air conditioner while I was sleeping, the next morning I didn't notice and continued using it, I tried all the shortcut keys, the reset key combination, plugged in the charger for more than 72 hours but the computer couldn't turn on. Then I opened the computer and discovered some strange places that I had never seen before in it. The trackpad cable bracket part was swollen, the board seemed to have burn marks, no cracks on screen, the battery and speakers were still normal, there was no light from the keyboard even though I tried to turn on the light under the keyboard (f5 , f6).Should I buy the replacement or bring it to the repair shop ( 80 for checking )

here is the damage I found.thank you for answering