Car has power but not starting?

So I recently bought a new battery for my car. It's been driving fine for a few months. Today I turned the key got all the beeps and dash lights like normal, however when I turned to start it nothing happens. i dont hear anything it just doesnt crank. I havent tried jumping it.
Update: I had drove it to the park in the morning, drove back home. I then went to a friends house and then came home again. Few hours later I got in to go to the store and that's when it decided to not start. It drove fine all day.
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