What is the amount of Priority Queues by default?

 There are 8 priority queues by default, and up to 8 additional queues can be manually configured1. Priority Queues are a feature of SecureXL that accelerates the performance of the Security Gateway by offloading CPU-intensive operations to the SecureXL device2. Priority Queues are used to prioritize traffic when the Security Gateway is stressed and needs to drop packets2. By default, there are 8 priority queues, each with a different priority level and type of connections2. You can manually configure up to 8 additional queues by setting the relevant kernel parameters in $FWDIR/boot/modules/fwkern.conf file1. You can also customize the queue length, the load balancing method, and the services that are considered as control connections1.

References: Firewall Priority Queues in R80.x / R81.x - Check Point Software, SecureXL - Check Point Software