A hyperbole is an extreme exaggeration. Here are a few examples
1) My parents will kill me when they find out I didn’t do my homework
2) I wouldn’t miss your concert for the world
3) I told you to get off your phone a million times
4) I’m so hungry I could eat a horse
All of these sentences are exaggerated heavily, making them an example of a hyperbole.
If you have any specific sentences you need help identifying then comment below and I’ll be glad to help :)