At the end of the day, very few people will take much heed from these so called scandals(including the taxes and China bank accounts) unless something credible comes out. Trump has the attorney general in his pocket and nothing is being done. A REPUBLICAN senate committee found no evidence of anything inappropriate and unlike Trump, Biden releases his taxes. This stuff might have more traction if people were not dealing with two of the worst crises in recent memory and it's a huge strategic miscalculation for Trump to focus on that and continually ignore the pandemic and pretend it's going away.
In my opinion, these silly attacks might energize those that drink the Kool Aid but they are more likely to turn off voters than to sway them. Most voters don't care about Trump's taxes, the nepotism of putting his family in the white house or the padded jobs that Biden's son had. They care about their jobs, their healthcare and how to get out of the pandemic. Trump's failure to inspire confidence beyond repeating the same platitude that his plan is the best and the greatest the world has ever seen like his pandemic response is wearing thin.
There is NO path to the white house for Trump without winning at least one of Michigan, Pennsylvania and Wisconsin which he won against all odds by the slimmest of margins in 2016 and currently behind by well over the margin of error unlike in 2016. He also will need to win ALL the toss up states which at the moment even includes places like Texas and Georgia which should have been be givens. The goose isn't cooked but the skin is starting to brown and the table is being set.
You better prepare your litany of lame excuses and conspiracies, less than 2 weeks before deliverance.