Hi @ashar02 ,
If you have already written Sling Model but the property values are not being fetched I would advice to debug the sling model in the IDE (eclipse, etc). You need to run AEM server in debug mode for that.
Also, check the Sling Model status-
Felix console > Status > Sling Models
/system/console/status-slingmodels
Also, check below video for Sling Model usage explanation-
https://youtu.be/Wq93eTSdoC8
Thanks,
Ritesh Mittal