This was answered a few years ago.
The try is worth three points.
It is a simple application of the player location rule 4-35.
SECTION 35 PLAYER LOCATION
ART. 1 . . .
The location of a player or nonplayer is determined by where the
player is touching the floor as far as being:
a. Inbounds or out of bounds.
b. In the frontcourt or backcourt.
c. Outside (behind/beyond) or inside the three-point field-goal line.
ART. 2 . . .
When a player is touching the backcourt, out of bounds or the threepoint
line, the player is located in backcourt, out of bounds or inside the threepoint
line, respectively.
ART. 3 . . .
The location of an airborne player with reference to the three factors
of Article 1 is the same as at the time such player was last in contact with the floor
or an extension of the floor, such as a bleacher.