One, how long does it usually take for someone to find all 7 dragonballs and 2 how can you get more AP?

Ter 1
These dragon-balls are earn by doing quests 1-25 it take you a day to get these or depends on how fast you quest
Ter 2
You get these kind of dragon-balls when you buy a scouter that can location them. Mobs drop these dragon-balls but must be +\- 5 levels of your own. These can take some time to get depending on your luck or what type of method you do. Could take you a day or to a week

How you get more ap is but a item from cash shop that increase it for a limited amount of time

Mkay so what are my chances of finding them? Is it like a 5% chance that one of the marked enemies will have one or is it more?

It's random.

Yeah but i feel like you have some percentage thats so terribly low that you would get a dragonball.

You can increase your chances by fighting supers,ultras,etc. And make sure your not in a party when hunting

It's just all about luck! But as it was said you can increase your chance if you kill a super/ultra/boss mob...

some ppl have very good luck and get them easily....some others like me don't have much luck and get all 7 db's in 1 year xD (1 year cuz i tried too often and got mad so i stoped with db search and just kept questing!)

Well i have some luck then because ive been getting a db every other day. I was just wondering what the chances were of me getting one.

That being said i have 2 since i started. XD