Look over the results.  You need to interpret the survey.   Would you say that, overall, your child is more on the happy, confident side; or more on the sad, unhappy, cautious side?  Or, are his/her feelings quite variable, depending upon the situation? Most children vary according to what they are familiar with.  There are usually a few surprises when you do this first.  Have you discovered something about your child that you didn't know before?  I hope so!

Most people do vary according to their experience.  If they have had some success and their experience in that area has been positive, they feel good about their abilities in that particular thing.  The more things you are feeling positive about the higher your self esteem is likely to be.

To impact on your child's self esteem you need to help them experience success and give them feedback about themselves which reflects the effort they expend rather than measure the degrees of success or failure they experience.  You really want them to give themselves a 'pat on the back' for their success rather than rely on your approval for their success (or implied disapproval if the praise isn't forthcoming.)