Do you want to search in all categories or in this category ?
You can select how you want to pay Google, check here for all the different ways you can manage your payment methods. If Google detects any problems with your billing information, all your campaigns will be stopped.
Your campaigns won't work again until you update your billing details. Be careful with your payments as if Google detects any fraud, your account will be canceled.
Google Adwords billing options
Basic concepts about Google Ads
