Hey @Vamsi,
If it is always the same task you want to skip, consider putting that logic into your model. (e.g. by using a gateway)
A nother possibility is to use the process instance modification API.
https://docs.camunda.org/manual/7.7/user-guide/process-engine/process-instance-modification/
This topic was also discussed in this thread: Skip Task in Camunda Using ProcessInstanceModification
I hope that helps you!
Cheers,
Miklas