It all depends on how much chicken nuggets you have and where they are from.
For instance --> There are 440 calories in a 10 nuggets serving of McDonald's Chicken McNuggets while there are 190 calories in a 4 nuggets serving of McDonald's Chicken McNuggets.
you might have to look at the packaging that they were in, or if its in a restaurant, feel free to ask the waiter and he'll/she'll tell you.
I hope this helps you!