Can we use the same license for f5 LTM VE into NSX integration

the reference architecture doesn't say anything about it.

https://f5.com/resources/white-papers/f5-reference-architecture-for-vmware-nsx

but it seems to use normal instances and nothing special so i don't see why not.

you do seem to need F5 iWorkflow, so that might require extra licensing.

have you already check with your local F5 sales?