The standard printing speed is usually between 20 mm/s and 65 mm/s, and it’s the speed the printer moves when during its job.
It must be in connection with Temperature and Layer Height. If by any chance, the layer is higher than usual, the temperature of the nozzle drops, and therefore the print temperature needs to be increased to compensate for the gap of temperature.

Besides the standard printing speed, we can modify other specific speed-related settings, like infill density, shell thickness, top and bottom layer, and so on.