Run the following commands to see the limits:

config show general limits

Sample output  are as below:
max_addresses: 65536
max_address_groups: 65536
max_dos_policy_rules: 10000
max_access_rules: 10000
max_vlans: 4096
max_nat_policy_rules: 8192 [Includes all types of NAT like manual NAT,Auto-NAT, static nat, dynamic nat, dynamic pat]
max_nat_sessions: 5,000,000
max_zone: 120
max_custom_application_signatures: 32768
max_custom_application_categories: 256
max_predefined_web_categories: 110
max_custom_web_categories: 420
max_protocols_supported: 150+
max_services_supported: 60,000+
current_cloud_url_lists: 310,000,000+
max_cert_cache_entries: 0x200
max_qos_policy_rule: 8192
max_users_supported: unlimited
max_ipv4_routes: 128000
max_ipv6_routes: 64000
max_multicast_routes: 8000
max_ssl_card_tps: 65000
max_ecdsa_card_tps: 45000
max_rsa_key_length: 4096
supported_ecc_key_length: P-256,P-384,P-521