Hey guys can anyone tell me what's wrong with my bougainvillia. I have had it for about 6 months and the leaves have started to curl. It is in a full sun position getting about 6 hours of direct sun. Watered every 1 to 2 days in spring and summer.

Probably too much water, water throughly until water comes out the bottom and than let it completely dry before next watering.
Lived in Southern Calif and had them along the fence, they grew like weeds, as the song goes, it never rains in California, and I did not supplement.

Is there a drainage hole in the bottom of the container it's in? If there is then really water that sucker, deeply so it really flows out of the bottom drainage hole. You might have to water like this once a week or so depending upon temperature. They grow on the dry side.
But they produce deep roots in a container and if you are essentially sprinkling a little water on top, the plant could be too dry causing the leaf curl.
Also in a container that size, try putting a tbsp. Of slow release plant food on the top of the soil 3X a year.