How is the certificate encrypted?

I want to get an Apple CA certificate from the link https://setup.icloud.com/setup/qualify/cert?ver=P1.10.1 but I get an unclear file.

How is it encrypted? Or how can you open it? i tried to save it as pem crt p12 but it doesn’t come out

curl https://setup.icloud.com/setup/qualify/cert?ver=P1.10.1 --output data.crt