the only thing legally required is a summary by the ag (or whoever oversees the special counsel) based on the confidential mueller report. but the summary can be edited/redacted/etc at the discretion of the ag.

https://www.motherjones.com/politics/2019/01/the-myth-of-the-mueller-report/

theres speculation about what dems in the house can do to make muellers findings public but if they get stiffarmed by a politically motivated doj and it heads to the supreme court...you know whos sitting there waiting.

republicans balked at protecting mueller and mandating full public disclosure of his investigation for a reason.