Genetic Test Reports are the reports your doctor provides to you after you have had clinical genetic testing performed. These are NOT the reports you receive from direct-to-consumer companies like 23andMe, AncestryDNA, etc.
A clinical genetic testing report usually includes a summary of any genetic variations found in the portion of your DNA tested, which may be a single gene, a few genes, all of your genes (your exome), or all of your DNA (your genome) depending on what your doctor ordered. The tests typically try to interpret those variations to classify them as benign, likely benign, likely pathogenic, pathogenic or as a variant of unknown significance.
The reports are typically provided to you as a ".pdf" file or a hard copy printed at the doctor's office.
This is different from "DNA data" which is the actual variants in a different structured format, such as a ".vcf" file which you can also request from your doctor or the genetic testing lab.
On Luna, researchers may want to see either your Genetic Test Report or your DNA data or both in order to complete their research. If they want your "Genetic Test Report", you will see that as a specific data request in the study you joined. If they want DNA data, you will typically see a request for a specific type of DNA data, e.g., "DNA Genome-Wide Microarray" or "DNA Whole Genome Sequence".