As @Jarod997 stated, resources should be producing over time. You said you waited over 24 hours to see if your claimed areas produced any resources and it still said 0. This is definitely a bug that you may be experiencing around your area. @tarun Although, it has been over 9 days, could you confirm that you are still experiencing this bug?
Also, there are a lot of problems with the raiding function right now. So far, the 'minute' counter begins 1 (one) minute late, and then changes to the correct minute about 30 seconds into the countdown. If you'd like to see the glitch in real-time, here is a link to the YouTube video: https://www.youtube.com/watch?v=qcIZDPflxEo
Could you please confirm that you are experiencing the resource production glitch please?