How long does it take to get oral cancer if you catch HPV at 25y?

Variable. Most people do not get cancer from hpv infection. Other factors, such as use of tobacco, alcohol and other infections may increase the risk. Genetic predisposition to hpv induced cancer also plays a strong role. The lag time varies from years to decades.
No one really knows. Likely would take a long time but its important to know that most people who are infected with hpv will not end up getting cancer.

Related Questions

How long before you get symptoms for HPV oral cancer. And if the woman that has it transmitt it by giving oral sex.

Hard to tell. Hopefully never but only time will tell. Choose your partners wisely, use protection. Read more...
Uncertain. Yes. Time duration unknown. Yes, you can. See oral surgeon or ENT doc if you have any of these symptoms: Persistent mouth sore, persistent mouth pain, a lump or thickening in the cheek, a white/red patch on the gums, tongue, tonsil, or lining of the mouth, a sore throat, hoarseness or feeling that something is caught in the throat that does not go away, difficulty swallowing/chewing. Read more...