There are a few ways you can show product management experience, depending on what you want to emphasize.
If you want to highlight your experience with developing and launching products, you can discuss your involvement in product ideation, development, and go-to-market strategy. You can also share concrete examples of successful product launches that you were responsible for.
If you want to focus on your experience managing product roadmaps and requirements, you can discuss how you prioritize and manage product features and enhancements. You can also share examples of how you've helped shape product strategy based on customer feedback and data analysis.
If you want to emphasize your experience managing and growing product teams, you can discuss how you hire, onboard, and develop product managers and other team members. You can also share examples of how you've built and scaled successful product teams.
No matter which emphasis you choose, be sure to back up your claims with data and concrete examples. This will show that you're not just making empty promises, but that you have a track record of delivering results.