https://www.cic.gc.ca/english/visit/biometrics.asp
Please use this website to quote IRCC's current policy correctly.
Per my situation, I gave my visitor visa biometrics, which is still valid until 2031. Since I have given biometrics prior and it is still valid, my PR application does not currently require me to give a new one (at least I did not receive a request for a new biometric letter).
Below is the direct quote from IRCC website:
"
If you apply for permanent residence
Due to COVID-19, as a temporary measure, if you gave your biometrics within the last 10 years, you don’t need to give your biometrics again.
"