Hello. I can't hear rotate and v2 confirmation by pilot, only V1. Can someone help.

V2 and Vr are coming from the aircraft and not from the copilot. Check your intro document on how to activate these from FMC options. If you are using a livery with accurate ini file and you are not hearing them is because the real aircraft in that airliner has not them. Either way you can activate them from the FMC menu

fmc/set up/options/page 3

Thanks