For the selected Animation clip, the Curves view includes a hierarchical list of the properties with animation curves. Expand, collapse, select, and deselect the properties in this list to filter which animation curves show in the Curves view.
For example, to show only the X-axis animation curves for the position of a GameObject, expand Position, select the Position.x property, and then press F to frame the animation curve for the Position.x property.
Curves view showing the animation curve for the Position.x property
There are many ways to expand, collapse, select, and deselect animation curves: