If you are only concerned with urban areas, then a good street map is sufficient. Anything beyond that, then it is more than just being able to read a map. In a survival/bug out situation, knowing how to read a topographic map, the terrain, and the stars are ALL important. USGS Topo maps will keep you from falling off a cliff. Knowing terrain features will keep you from going in circles. Knowing how to read the grid system is paramount to using a topo. Also, knowing how to fix an azimuth and back azimuth is a must. A USGS topo map will have another very important feature called Angle of Declination. Magnetic north is not true north and you have to adjust you compass and map to the proper angle. There is a whole lot more to know. It might seem daunting, but it really isn't. Once you get the hang of it, it is pretty easy.

Oh, and get a really good compass. My go to has been a CMMG Military Lensatic for over 40 years now. Very durable, and spot on.