what is the consensus on bolding in resumes?

Yes, bold things to give them the extra oomph, but do it sparingly. If you bold several words in every bullet point, it becomes counterproductive and harder to parse your resume for what matters.

You can bold things like key metrics or major projects you've landed.

I lean towards keeping it simple and not bolding anything within my experience (I just use bold for section-ing).

If you were to bold things, I would keep it minimal. If I were to throw a number out there, I would do 5 bolds max across the entire resume.

In terms of what to bold, it's simply your most impressive pieces, ideally metrics.