If you try it yourself, then you will most likely break the keycap and/or the very fragile butterfly mechanism. The key caps are extremely thin plastic & can crack easily. It takes practice to remove them and even then sometimes they can break. If only two keys are affected, the perhaps an Apple Authorized Service Provider will remove them & clean them, but keep in mind it is possible even they could break it. Chances are an Apple Store will just have the entire Top Case/Keyboard Assembly replaced (so might an AASP, but an AASP sometime may offer extra services & options).
FYI, I personally don't recommend spending any money to repair a 2016-2020 Intel Mac (especially the 2018-2020 models) for multiple reasons. I think the money spent on repairs is better put towards a new laptop. Liquid damage makes this even more recommended since you don't know if corrosion is still forming on the internal electronics of the Logic Board which may not be noticeable yet....it can take a while sometimes for the corrosion to eat away at the solder & metals.