How legitimate is EPGY for colleges?

@Hawkace‌ it’s just a college-level online course. Its supposed to be like $500 but I got financial aid which dropped it down to $50 (I’ll make sure to tell them that so they know I didn’t just pay out of my pocket because I’m rich). Other than the fact that it’s from Stanford and very difficult to get an A, not much else I can show for it, but wouldn’t it still look somewhat good? But how good does it look compared to assuming I actually took the AP Physics C course at my school (which I didn’t, because there was no more space and our school limits AP courses). I really need to demonstrate strength in physics, so how far will this program go to show that strength?