What does it mean if a card is uncirculated???
It makes it more valuable right???

It means that the card was not distributed by the card companies through a pack. Often these could be box loaders in a box or handouts at a show (the national). The value depends on the player/set/team just like it does with most other cards. All of the uncirculated cards I have are numbered.

To add..

Most uncirculated cards are slabbed.
Many have rather low print runs, which is where demand and pricing comes in.

is it? not sure