After you apply for Child Benefit, it typically takes around 6 to 12 weeks to process your application. If you've provided all the required information and documents, it may be quicker. However, delays can occur, especially during busy periods. It's advisable to check your application status through the HM Revenue and Customs (HMRC) website or contact them directly if you haven't heard back within this timeframe. Remember to keep all your paperwork in case you need to provide further details.