Unfortunately, there’s no direct way in CalculiX: How to get SPRING2 element stress? - CalculiX (official versions are on www.calculix.de, the official GitHub repository is at https://github.com/Dhondtguido/CalculiX).
Only workarounds like this: Extracting springs force and elongation - CalculiX (official versions are on www.calculix.de, the official GitHub repository is at https://github.com/Dhondtguido/CalculiX).
Only by editing CalculiX keywords: Spring between two nodes