The story is Bush is not supporting the reelection and not voting for Trump like he didn’t in 2016 but Karl Rove got to him to keep it quiet bc it hurts the party. The spokesdude said made up but didn’t really go beyond W was retired and isn’t going to speak on the topic. So far has W supported the Trump re-election in any way? Nope.
I do think Bush is the person who wasn’t going to publicly say anything anyway. Would Trump want Bush to campaign for him if he was willing. Not sure that would help in any way.