Hey @Ketan_ATA,
Check out this thread on photon setup, it may assist you - It's hard to create multiplayer games?.
Additionally, I would recommend creating a project from scratch in the method detailed in this tutorial - https://utautattaro.github.io/Photon-for-PlayCanvas/. From personal experience of creating several Photon projects, forking the starter project does not work as well, but instead you will need to configure it to your requirements, which the tutorial explains brilliantly.