Video resolution, in its usual meaning, is the same thing as its dimensions in pixels, so the same 320px × 240px, or 1280×720 px (aka "720p"), &c.
It doesn't directly depend on bitrate; a lower bitrate can mean lower dimensions/resolution, but it can also mean a lower-quality video (more visible artifacts) at the same resolution, or it can mean a better video codec (more efficient compression) was used. So the only thing the bitrate directly tells you is how many bits (on average) were used for one second of the video.
(In some other contexts, such as images/photos, "resolution" might also mean DPI, but that's not relevant here.)