score:2
I can not answer for the rest of the word but did check it for the country where cycling is the most common way of transport.
This site (run by the Dutch police) is very clear about it.
Op de fiets mag je maximaal 0,5 promille alcohol in je bloed hebben. Dat zijn ongeveer twee glazen.
On the bike you are allowed a maximum of 0.5 promille alcohol in your blood. That is about two glasses.
As a Dutch person who has lived in the country for more than 50 years, I have never heard of a cyclist being tested for alcohol as a routine test, nor of having been banned of getting on with cycling unless clearly drunk.
So, yes, it is in the law, but no, it is not active.
That is unless you are involved in an accident and they have reasons to suspect your alcohol consumption.