TouchBar partly does not respond, and enters in clicking epilepsy

Sadly, liquid damage is always tricky! The ingredients of the drink often exasperate the issues as they can cause metals to corrode and electrically conduct allowing the metals to decompose via electroless. Standing liquid inside also doesn’t help! When parts heat up they can alter from the material now on them as well as expand causing problems.

You do need to find someone who has deeper experience to physically clean the internal parts of the remaining spill and it’s damage. They may need to repair and/or replace parts. Here it’s likely the TouchBar and it’s circuit board which sits underneath it.

I strongly recommend you make a backup of your stuff before the system fails in a state that you can’t recover your data.

Time is your Enemy!! Don’t delay if you want to save your system as the longer things stew the greater the damage and in turn the cost to repair!