Shure beta 57A ..low recording volume from acoustic piano ...Directly to laptop no mixer used

Are you using an interface?
Your level will be always be lower if you are going straight in.
Your interface and mixer will help you get the correct level in to your system before recording and also shaping the sound after the recording.You just need to get more gain up in there

Besides what the first gentleman stated, May I ask why use a cardiod dynamic microphone in the first place? My first choice would be a PZM pressure zone microphone, Shure makes the SM-91, Crown also makes them. The pick up pattern of a boundary type microphon is half cardiod (SM-91) or even omni directional....plus it is a condensor type, which can integrate a preamp stage in a capsule "before" the input to a mixer or laptop. The PZM is placed against the lid of the piano or a flat surface which gives it better off axis noise rejection. Perhaps since it is a solo piano the "omni" would be a better way to go since mic bleed over from other instruments isnt an issue. An alternative would be any "hand held" omni directional for picking up a solo piano. The SM-57 is a great microphone for close miking a guitar speaker cabinet, or a vocal, or a tom in drum kit. Also, if it sounds "bad" change the mic position, this can be a trial and error situation until you find the sound you prefer.