I was in contact with support a couple weeks ago and received zero resolution. This was their response:

“Now, the reports don't pull "business use of home" information unfortunately. You can deduct this for your taxes, but QBSE doesn't report it or calculate it for you. There is a need for you to do it on your own.” 
Not too happy about this! Why would quickbooks not report or calculate it when it’s a legitimate expense? Beyond frustrating.