Hi, when you say you don't know which fingers to move do you mean within the context of a piece of music, or just the scales themselves? For the latter, I can give you some advice (though if you search something like "piano scale fingerings" on Google images, you can probably get some fairly standard fingerings for both hands).
Each diatonic (major, minor or modal) scale consists of 7 distinct notes, and the fingering is always 1-2-3 1-2-3-4 in one direction, and the reverse in the other direction, however, you need to find where this sequence starts within the scale. The more black keys there are in a scale, the fewer the possible comfortable positions. Always put your thumb on a white key, and prefer putting your 3rd and especially your 4th fingers on black keys, if possible. (Fun fact: for the major scales, once you have your right hand's fingering, you can imagine mirroring the keyboard and your hand around the D or G# key and you get another major scale with a good fingering for the left hand).
DO NOT start with C major if it's your first time learning scales. Maybe start with E major (4 sharps) as it is comfortable and you can use the mirrored fingering in the other hand.