As of middle of December there were 17 ongoing Trump investigations.Difficult to keep track to the number of investigations to all his business dealings. It makes sense why he tried to use Clinton's investigation, and "jail Her chants", as a deflection to all his own actual crooked transactions.
https://www.wired.com/story/mueller-investigation-trump-russia-complete-guide/A COMPLETE GUIDE TO ALL 17 (KNOWN) TRUMP AND RUSSIA INVESTIGATIONS
But that was a month ago, who knows how many are going on now.