To use Netcode tools, such as the profiler, in your project, you need to install the tools package by name.
- Open your Unity Hub and select the Project your are presently working on.
- In the editor's menu bar, navigate to Window > Package Manager.
- Click the plus sign (Add) in the Package Manager status bar and select Add package by name....
com.unity.multiplayer.toolsin the pop-up window and select Add.