Given the gigantic stakes, Joe Biden is running a fairly low-key campaign for the presidency. His events are relatively infrequent and very small — part of a strategy to emphasize the danger of the coronavirus pandemic. In several key states, like Michigan, the campaign has very little presence on the ground at all, and is not doing any in-person canvassing. It is raising a ton of money and spending hugely on ads, but the ads are also rather anodyne, most promising vaguely to restore a modicum of decency and professionalism to the White House.
In other words, Biden is largely following the strategy of his primary election, in which he coasted to victory on the strength of his reputation and the anxious fears of the electorate.