db_tsv-Clean suggests this is a "clean" (pre-processed) database export, commonly used for data analysis, machine learning training, or data curation tasks.
If you can tell me or what data it is supposed to contain , I can give you a more specific guide on how to use it. How to open 7z files - Trend Micro Help Center db_tsv-Clean.7z
.7z (7-Zip) — A high-compression archive format requiring software like 7-Zip or WinZip to open. commonly used for data analysis