Macbook pro not turning on
There is no sensor to detect moisture that will shut down  a Mac.  There are moisture indicator strips that will let a technician know if it was exposed to liquid, howver.
Now, if you got the MacBook wet, it can cause damage to the logic board where it will stop working.  Note that I didn’t use the term “shut down.”  This is because liquid damage can short out electrical contacts causing the machine to simply power off where you lose data unlike a shut down that cleanly turns off your computer.  It’s like pulling the plug on a desktop machine.
It may be too late, but you should still review this post:  What procedure should be followed post spilling fluids onto a MacBook keyboard?
The fact that it doesn’t turn on at all means you need to take it in for service.