I did a quick AI search on google with the following results:
High Prevalence in Autopsies: Autopsy studies, which examine prostate glands from men who died of other causes, consistently show a high prevalence of prostate cancer that was never clinically diagnosed.
A meta-analysis of 19 autopsy studies involving over 6,000 men found that the prevalence of asymptomatic cancer increases significantly with age.
Approximately 36% of Caucasian men aged 70-79 had evidence of a tumor, rising to nearly 60% in Japanese men in their 80s in one study.
Overall, the prevalence of asymptomatic prostate cancer was estimated to increase nonlinearly from about 5% in men under 30 to 59% in men over 79.
I then cut and pasted you're question in and got this answer:
Key Research Findings:
Prostate Cancer: This is the most extensively studied cancer regarding asymptomatic cases in men. Autopsy studies have long confirmed a high prevalence of undiagnosed prostate cancer, even in younger men, which increases with age. Some estimates suggest that as many as half of Caucasian men over 80 years old may have indolent prostate cancer that never caused symptoms or harm in their lifetime.
Screening Data: Studies of men who undergo PSA testing (prostate-specific antigen test) without symptoms have found varying rates of diagnosis.
A 2018 English National Cancer Diagnosis Audit (NCDA) analysis found that nearly one in five (19.2%) prostate cancer patients were diagnosed after an asymptomatic PSA test.
Older studies on the effects of widespread PSA screening estimated that 42-66% of all diagnosed prostate cancers might be cases of "overdiagnosis"—meaning the cancer would not have caused clinical harm had it remained undetected.
I don't know how much that helps you but I hope it does.