Suggested fingering is written along the top for guidance.?
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Once you have tried that a few times try going in reverse.?

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Try this for a few times until you can do it over smoothly.?

Once you have got this working to your satisfaction try combining the ascending and descending scale so that you play up and down with no pause in between.? In this case you can drop off the 2nd C at the top of the scale. Once you know the routine for this one scale, you know it for most of the others.

I know you have done this before but repetition never hurt anybody.

It has been mentioned before that there is no sharp or flat between the B and C or E and F.? That is because the gap between these notes is only a half step anyway.? In any scale of any key there are always two half steps within the scale.? If we consider the scale as a row of 8 number 1 to 8 it would look like this:

1?? 2?? 34? 5?? 6?? 78

It does not matter what the tonic note of the scale is, A to G.? If you count the notes as number you will always find the the steps between 3 and 4 and 7 and 8 are half steps.