FCPX: why I am not able to see the Tracker Tab on the top of the Viewer

Where is “Title 2”?

If I am following correctly you added a tracker to the clip, and want to use it to track the title. I can see that a tracker appears associated to the Transform of the title in the Inspector. You should have the title selected in the timeline and activate the transform tool in the viewer to see those buttons

Here is an example:

1) A clip of a low flying bird. I added a tracker to the bird:

2) I assigned this tracker to the Basic Title above in the timeline. When I have the title selected and I activate the Transform tool in the viewer, I can see the tracker button:

You will see the tracker tab when there are applicable trackers.

First, add a tracker, analyze, and then you can apply it.

Please post some screenshots of the viewer and inspector.

Check this video by Mark Spencer, of rippletraining.com, where he explains how it all works.

https://www.provideocoalition.com/final-cut-pro-10-6-new-features/