Do you mean there are no sparks?
We don't have any information for your vehicle so I don't know the system used. Can you show me some pictures of the coil and engine components so I can understand?
Is this vehicle timing belt driven?
With distributor?
Provide me with as much information as possible.

yes it is driven by timing belt and distributor .. when i turn the keys on there is a crank but no sparks on ignition coil thru spark plug

Did you check if the distributor rotor is turning?
A bad timing belt would not turn the distributor.
Did you check for trouble codes?
Is the igniter (power module ), crank, cylinder sensors etc within the distributor?