I can't give you any exact figures, but according to representatives of the RCMP and federal retirees, the fund contained millions of dollars and the return on investment over the past five or 10 years has been huge. As you pointed out, so far, no one knows how much money has been set aside to pay out these benefits just in case the legislation were to be amended, as we hope it will be.
On April 29th, 2022. See this statement in context.