if we want more than 3 outgoing flow which gateway suitable for this?
It is not about the number of outgoing flows. It is about the problem you are trying to solve. You can read about the BPMN Gateways in our documentation. In each and everyone you can have an arbitrary number of outgoing flows.
how can we use the exclusive gateway for more than 5 outgoing sequence flow?
@maheshkaware Try using the parallel gateway. It allows you to have 5 outgoing sequence flows all in parallel.
You can have as many outgoing sequence flows as you want on an exclusive gateway. Where did you see that you can only use 5?