I spilled 5-7 mL's of milk on the left side of my keyboard

it is usally very expensive if your logicboard is damaged the new logicboard cost 800$ if it could repair it would cost 200 -400 $ i suggest you to take your macbook to apple genius bar and they would give you a estimate btw i also spilled tea on my macbook pro A2338 only the logicboard was damaged i took it to a local repair shop they told me the logicboard needs to be replaced so i researched a little on it from their i got to know is 800$ as it is lowerend macbooks of apple as compaired to 15inch one the logicboard is way more expensive and 800$ is nobrainer as compaired to it i suggestyou to get it fixed by genius bar i know it more expensive but this is a new macbook and its parts are not widely availible most of the local repairs store wont have part for this paticullar model so i suggest you to go to apple store to get it fixed

Same happened to me on 19 feb, but I took it to my local apple repair shop and they cleaned it for me, and I suggest you do it as soon as possible, but they refused to clean the keyboard and said I had to completely replace it. The keyboard is working fine but the keys are getting stuck so I am cleaning it on my own. I think yours will also get stuck nice the liquid dries out. So don’t panic and go to YouTube and search for Tutorials on how to clean your keyboard. It’s going to take some time to clean the keys individually but it’s still better than replacing the whole keyboard.

Just for future reference Apple Care Plus will cover any accidental damage. They would charge a maximum of $299 Service fee, Likely would replace your MacBook with a refurbed one but would be best since liquid damage can affect multiple parts that add up when replacing. Hope your MacBook survived and serves you for many years to come.