Thanks for sharing the screen shot of your Samsung Members app notice for the list of Samsung devices eligible for Android 13 software updates, here.
Your Samsung Galaxy A12 was released in December 2020 and already received its two major OS updates. And select devices launched in 2019 or later will be supported with firmware security updates for a minimum of four (4) years following their global launch, while select newer devices will receive up to five (5) years of security updates
The latest Android 13 rollout and release times may vary depending on device version and model or service version, country/region, and network-dependent.
