HI Letsgetit21,
When you spin up and complete basic configuration for FMC. It basically have 90days evaluation license after that you need to register with Cisco Smart Account. You can download a Virtual package in below URL
https://software.cisco.com/download/home/286259687/type/286271056/release/7.0.5
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If you find my reply solved your question or issue, kindly click the 'Accept as Solution' button and vote it as helpful.
You can also learn more about Secure Firewall (formerly known as NGFW) through our live Ask the Experts (ATXs) session. Check out Cisco Network Security ATXs Resources [https://community.cisco.com/t5/security-knowledge-base/cisco-network-security-ask-the-experts-resources/ta-p/4416493] to view the latest schedule for upcoming sessions, as well as the useful references, e.g. online guides, FAQs.
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Regards
Arunkumar