FMP production

Ive been working on my game production over the holidays.
Looking at tutorials i have been able to create a basic gameplay with 1 type of target, the target spawns and moves across the screen right to left.

There are problems with this however, the spawn points of the targets are random but are on the same level... however when a new target appears the score resets itself to 0 no matter how many points are already scored

The next parts i will be working on will be the targets (trying to sort out the problems) the scoring system... adding a new target to mix in to the game... a time limit on the game
and the script to decide whether the game gets completed or game gets failed