Hi Aggiegirl009
It's hard to tell by the angle of the photo. Is this place in addition to the vent on your chick?
You can gently wash it in a little warm soapy water, rinse. Dry your chick well (you can use a hair dryer on low).
If it is not the vent, then after you clean it up and dry it post another photo. It could be where the umbilical cord was. Don't pull anything. You can apply some plain neosporin.
Let us know how she is doing.