If you click on the license, you can find the license type from the popup window. The below is a term licenses screenshot, unfortunately i don't have the perpetual licenses and if i remember correctly instead of term it mentioned perpetual if its perpetual license.
service will not stop for perpetual license if the Support contract expire. The challenge is you wont be getting any support and you cannot upgrade to latest version if Cisco release new.
![NithinEluvathingal_0-1690168467405.png NithinEluvathingal_0-1690168467405.png](https://community.cisco.com/t5/image/serverpage/image-id/192295iCCEEE1AED25B411A/image-size/medium?v=v2&px=400)