To open the Profiler, you can use Ctrl+7 or

While in Play mode:

CPU usage options can be enabled or disabled

These are the available options:

Usually the info will be shown this way

For better reading, change the Timeline option to Hierarchy

It is suggested to turn on Clear on Play and deep profile

While in play mode, if you click into the profiler, the game will pause automatically. You can move the white line to check out info about any specific frame

You can turn off several options in the left side to check out the item that has more weight, in this case, others