Dear fellow traveler, sometimes it take a little long to get your credits. Tripoto will send you a e-mail when your trip/photo blog get published on the portal and how much credits you awarded for your trip.
Photos have to be of very good quality and you need to write some description about the pics so that it is a value add to the reader. you wont get any credit for just uploading the pics. Usually it takes 24-48 hours to get the credit updated. It takes longer if you post just before the weekend.