Before I can go to the next page I need to put something in box D but there isn’t anything in box D. I tried putting random numbers in as suggested but no luck.

Box D on what form?  W2, 1099 or where?

W2 box d Control number is not needed. See
https://ttlc.intuit.com/community/forms/help/i-have-no-box-d-or-control-number-on-my-w-2/00/26469

The control number in box d is not required by the IRS - it is used by your employer. As a result, if it causing you trouble, just delete it. If it is not causing you trouble, then leave it in - it won't matter.

If you're referring to box D on a W-2, are you entering the W-2 manually or are you trying to import it? If you are entering a W-2 manually, box D is not required. Just leave it empty. If you are trying to import the W-2, skip the import and enter the W-2 manually. It only takes a couple of minutes. It will be a lot faster and easier than trying to figure out why the import is not working.

It appears that employers sometimes tell TurboTax to require box D for importing the W-2, even though the employer did not put anything in box D.