There was nothing to pardon at the time. January 6 people were put in jail during the Biden resident regime. Trump couldn’t pardon them and he had nothing to do with it. Trump was out of office.
Trump could've offered a blanket pardon for any federal crimes that may or may not have been committed at the Capitol on January 6th. There was precedent. Carton pardoned all draft dodgers, many of whom had never been charged with a crime.
Additionally, Trump himself pardoned Steve Bannon who had not been charged with a crime and was only under investigation.
He could've pardoned them all. He didn't. Sure raised a ton of money from it though!