The fines for distracted driving vary state by state and often have different charges for first, second, and subsequent offenses. In general, you can expect to pay between $20 and $150 for a first offense, although drivers in Oregon can be fined up to $1,000 for their first texting and driving violation! Montana is the only state without a comprehensive distracted driving law.
Of course, all this supposes that texting and driving was your only offense. Combine those with speeding, reckless driving, or, worse, a crash that causes injuries or deaths, and you could be looking at a potentially serious criminal charge in many jurisdictions.