Push Notification Limits Have Increased

You can send up to 20,000 iOS and 10,000 Android push notifications per hour per org.

Where: This change applies to mobile apps installed from the AppExchange that send push notifications. Packages can be installed in Essentials, Group, Professional, Enterprise, Performance, Unlimited, and Developer editions.

https://help.salesforce.com/s/articleView?id=release-notes.rn_forcecom_general_push_limits.htm&release=226&type=5