I'm trying to collect data and create a repository and also search and retrieval of this information. The data has to be retrieved in the format of a form too.
Confluence is a wiki, not a form-processing engine. If you want to use forms in Confluence, then you'll need an app to layer that functionality over the content. Take a look at Adaptavist's forms for Confluence, and Confiforms for a couple of good approaches to that.
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