In the LCD screen you can see TOTAL TIME recording duration.
But, how do you can see MOVIE TIME (of this clip) during recording?

I’m not sure I understand correctly about what time you were asking. If you mean whether it’s possible to see the elapsing time of the currently recoded clip, then the answer is no, the AX2000 has no such function.

On occasion when I need to know exactly the clip length, I use a cheap sport stopwatch.

OK.
Thanks.

There is no way no see time recording of actual movie, you only have the time of all the movies on the card.