It depends which online Uni you have your degree from. Just like a regular Uni. you want to make sure you have gone to one that is highly creditable.

I really hope so since you have already gotten your degree.

It depends on what institution is handling the on-line instruction — if it’s an accredited university that has on-line programs in addition to a regular curriculum, sure. If it’s an on-line “paper mill” where there isn’t any real instruction or testing, and you just get credit for “life experience” — no way.
I once interviewed a guy for a senior producer position, who had on his resume bachelor’s and master’s degrees in English Lit and Business. He listed the school, and I’d never heard of it — so I did a google search, and found them: “Get credit for your life experience! Bachelor’s degrees from $79.95!”

I asked the candidate if he really thought these degrees were worth anything, to which he replied,” Sure, they asked me what I had done previously, and might not have given me the degrees if I hadn’t had a lot of experience.”

Needless to say, I didn’t hire him — and I advised him not to put them on his resume in the future, since they gave the impression that he was trying to pull a fast one on potential employers