Dear Mr. Janeczko,
Thank you for posting your question on History Hub!
For reasons of personal privacy, information for recent service members and veterans is not made available to the general public. The records of the National Archives do not encompass service records for service members separated from service in 2020.
You may be able to further your research into your brother's service history at the following website, which has a series of information links and topics for researching veterans and their service.
We hope this is helpful.