Do you mean you received the Passport request letter? If yes, You have to fill the web form for passport submission. Please check on vfs website or see previous messages for more details.
https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/permanent-residents.html#outsidecanada
please see the step “Pay your fees”
I was also in similar situation and applied for PRTD under normal category and not under compassionate grounds. I shared my husband’s PR card, marriage certificate and my employer details to show my future residency obligation. Mine was approved in 15 days.