* It's a typo: Perhaps you meant a similar acronym like BS in a specific field (e.g., BS in Electrical Engineering).
* It's a specific college or university's abbreviation: Some institutions might use non-standard abbreviations for their degrees.
* It's an informal or unofficial term: The acronym might be used informally within a specific context, but not formally recognized.
To find out what BSET means, you'll need to provide more context, such as where you encountered the abbreviation.