Box Office mojo lists them separately. Adjusted gross, E4 is only $1.2 billion with $271 mil for special edition and
$47 million for the re-release (1982).
Combined, you are looking at roughly $1.5 billion, Avatar is still around $2.8 billion. Endgame is at $2.749 billion. If it beats Avatar on a re-release, there will definitely be an asterisk next to the record.