I am using Salesforce CPQ, I need to create an alert message when saving a quote line based on the product field when the checkbox is enabled. I tried using product rules. but I do not get to choose the product fields.

I successfully completed the Salesforce Certified Platform Developer II - Multiple Choice (WI21) but didn't receive a certification logo and the certificate doesn't appear in the trailhead profile. Could anyone please give me a piece of advice?