I totally agree with mastersmithson. A lot of commercial sex workers, or CSWs, won't perform or receive oral without a barrier, like a condom or dental dam, as their livelihoods depend on being safe.
It sounds as if you are worried most about HPV, but there are other infections you need to concern yourself with.
Kissing isn't a huge risk for HPV. It's possible, but oral sex is a bigger risk for oral HPV.
Kissing could transmit hsv1, but about half the adult population has that. You might already have that and not know it - 90% never get any symptoms.
From receiving oral sex without a condom, you could get gonorrhea, chlamydia, NGU/NSU (same thing, called different things depending on where you are - it's an infection in your urethra), syphilis, and genital herpes type 1.
If you give oral sex, it's possible to get gonorrhea and chlamydia orally, though if your partners are women and have vaginas, it's far less likely for this to happen. (Giving oral sex to a penis puts the penis in the throat, making it easier for any infection to transmit.)
Using a condom for oral sex prevents gonorrhea, chlamydia and NGU/NSU, and offers significant protection against syphilis, HPV and ghsv1.
A note about oral HPV - obviously no one wants it, and I don't want to make it sound like it's not a big deal, but millions and millions give oral sex, but there are only about 30,000 cases of oral cancers in the US each year. Most oral HPV infections will be without symptoms and won't cause any problems.
Another note about HPV - like 90% of the population will have it at some point in their lives, at least once. Most won't know it, especially men, since there is no test for men. Most experts consider this an inevitability of sexual activity now. I'm not saying give up on preventing it, but also don't freak about it.
Definitely get the HPV vaccine, though. That prevents the most high risk strains that lead to cancer.
There is no sex that is without risk, unless you are in a purely monogamous relationship and both partners are negative for all infections.
Relax!
Depending what country you are from has some weight to this but generally sex workers use protection and keep testing regularly as it's their source of income.
Kissing is negligible without an active sore. Oral and insertive with protection is Risker but more than half of people who are sexually active will have some experience with it.