Today my madam asked me inform to sir that she will come late l told to sir ....sir madam comes one hour late is this sentence correct which I used
It is idiomatic just to "be late",
Sir, madam has asked me to inform you that she will be about one hour late
If you want to use a verb, then "arrive" is more appropriate than "come". The word "arrive" implies reaching a particular place, whereas "come" is more related to the journey.
Sir, madam sends her apologies, she will be arriving an hour late.