Yes, you can sit the APMP Graphics micro-certification without being a designer. It is a 30-question multiple-choice paper in 30 minutes, you need 20 correct (67%) to pass, and the exam fee is $165 for APMP members or $300 for nonmembers. It tests whether you can judge and plan proposal graphics, not whether you can draw them.

The credential goes by GR-M APMP and sits among a family of short APMP micro-certifications for proposal people who want one skill proved rather than a whole career ladder. Searches for it are rare and specific: "certification graphics", cost, requirements. This guide answers those in order, then adds what a candidate needs beyond the numbers, which is a way to spend the thirty minutes and a sensible two weeks of preparation.
Do you need to be a designer to sit the APMP Graphics micro-certification?
No. APMG, the body that delivers APMP exams, aims the Graphics micro-certification at proposal managers, and its own wording is about what graphics do: impactful proposal graphic design increases a proposal's clarity and persuasive power. The questions are multiple choice, so there is no drawing task and no software to open. What you are asked, in effect, is whether you would make the right call when a graphic is needed, chosen, built or reviewed.