Looks to have around 3/4 of the spool left. Not a full 500 feet.

Carol Brand Sound & Security Cable features a 14/2 gauge construction, ideal for riser-rated applications. This unshielded, 2-conductor wire is CL3R rated and comes in a professional gray jacket. Manufactured in the USA, it is designed for power-limited circuit applications in accordance with NEC Article 725. The spool is marked for 500 feet, though please note it is an open reel and some length may have been used.

Measurements:
• Length: 500ft (Original Capacity)
• Gauge: 14/2 AWG