HPV??

So I’m doing some research on HPV and I’m a little confused. How common is this virus?? If you have the strands that are connected to cancer, how likely is it that you will actually develop cancer? And can those strands stay dormant forever? If you don’t have the cancer connected strand, why do they continue to check, if it won’t progress into anything. And finally, is HPV worth worrying about? Or is it something that’s not worth the stress ( given you always go to your dr appointments)