I understand your problem but in your question your going from submission of a form to querying data you expect in the database then displaying it. That covers a lot of steps.
My first question is have you confirmed that your submitted form values are being stored as you expect? We need to rule out data insertion being the real problem rather than SELECT and displaying the information.
I would Google “WPDB” which will help you find a page dealing with queries using the $wpdb object. If you have not already written your SELECT query and especially if you haven’t finished or complete your INSERT or UPDATE queries as you really need to think about security.
You should then post your queries here.
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