I'd need more info on where the coloring is, the shell pattern, where you found it, etc... It could be a box turtle, painted turtle, yellow bellied slider, red eared slider. It's hard to answer with vague descriptions
I have a green and yellow turtle, what kind is it?
I would suggest putting in your search bar, types of turtles and go from there. Without much of a description, I can't help you out much. But, I hope this helps you out. Good luck.