i tried many time to read internal timer of arm 7 using LCD or USART but its not giving output. i think , timer 0 is 32 bit and we start that timer it will start form 0 but its not giving me any output
If you dont' get any output the issue isn't with the timer but with your output device.
If you do get output, but nothing is ticking, then it might be a timer issue.
Maybe you should be a bit more clear exactly what issues you have.
By the way - not showing any code and not telling what chip you are using isn't exactly a great way to get help.