Here we can find data for MSM in the UK:

https://www.nat.org.uk/about-hiv/hiv-statistics#gbura9ikxk

and it is said:

The number of new cases in the UK in 2022 is a 63.8% decrease since 2014 and reflects the success of increased HIV testing and increased uptake of HIV treatment. The introduction of HIV prevention drug PrEP is also likely to have had an impact.

Regarding PrEP implantation we can read:

https://www.nat.org.uk/about-hiv/hiv-statistics#gbdwbbruoh

In 2022, 86,324 people initiated or continued PrEP in England, making up 85.4% of those with an identified PrEP need. This is a 40.3% increase from the number initiating or continuing PrEP in 2021. The majority of people initiating or continuing PrEP in England in 2022 were white gay, bisexual or other men who have sex with men, with 74.6% of those with PrEP need in this groups initiating or continuing PrEP in this year.

Data for the US can be found here:

https://www.hiv.gov/blog/cdc-publishes-new-hiv-surveillance-reports

It is said that:

The estimated number of new HIV infections in 2022 (31,800) decreased 12% compared with 2018 (36,200), driven by a 30% decrease among young people aged 13-24 years. Increases in preexposure prophylaxis prescriptions, viral suppression and HIV testing likely contributed to the decline. 

...

New HIV infections among gay, bisexual, and other men who have sex with men (MSM) were about 16% lower among Black men in 2022 (7,400) compared with 2018 (8,800) and 20% lower among White men in 2022 (4,400) compared with 2018 (5,500). Although the number of new HIV infections remained about the same among Hispanic/Latino MSM (8,200 in 2018 and 8,300 in 2022) ...

Here we can read about Amsterdam:

https://www.queerty.com/this-popular-gay-mecca-has-seen-a-95-drop-in-new-hiv-cases-heres-how-they-did-it-20231221

Recent statistics revealed that in 2022, Amsterdam had only nine new cases of HIV. That represents a 95% decline in new cases since 2010, when it recorded 201.