Embedding report in a webpage

Hello, I need a help to the following question:

I want to display a report in a form for a person.

"But only the responses that have a certain value in a custom field." Example: A defined code.

And I need it in iframe to display a page on my site. It is possible?

You can actually use HTML table listing or Grid report. You will be given an option what forms fields should appear in the report.

At the end part of the wizard, you will be provided with the iframe code that you can use to embed the report to your webpage.

Please do check these guides:
How-to-create-an-HTML-Table-Listing-Report
How-to-create-a-Grid-Listing-report

Hope that helps. Thank you.