Some risky types (16, 18, 31, 45...) of HPV can cause precancerous lesions (displasions) on the cervix that in time (several years) can be transformed into cervical cancer. PAP-test can detect these precancerous lesions according to the cell changes in the squamous cells rubbed from the cervix. That's why PAP-test has great practical value in preventing cervical cancer. It give us chance to act before malignant transformation occurs.
Not all genital warts are caused by risky types of HPV. Unfortunately most of the risky types of HPV do not cause visible lesions (warts). Beside PAP-test, you also need DNA-HPV-test to prove and determine HPV's type.
HPV-vaccine won't help you because you are already infected with HPV. You can only use local therapy to treat the warts.