Probably the best certification anybody can get is JSPS.
No, not the one on the first few pages of a google search that have to do with Japan or Java.
The real, earned one. That you can only get by somebody else examining you, finding you meet all of the qualifications, and awading it to you. First guy I knew with the certification went around adding the initials after his name, which was unusual back then. Nobody added initials after their name unles they were the guy you went to to get a prescription written (M.D.) or get out of being put in jail (Esq.).
Somebody finally asked him what the initials were for and what did they mean. After he told us we realized we all probably qualified but none of us really wanted to be awarded the title:
Just Some Poor Schmuck
Write the initials after your name and people will think you are important. Most professions nowadays do not judge on actual merit/ability but by what initials you put after your name/certificates you have hanging on the wall. I know that when I finished my degree program and could honestly write initials after my name I got loads more respect than my performance reputation ever garnered me. Nobody asks their doctor what their class rank was, they just look for the M.D. after the name. Same with lawyers and the J.D. (Not that I'm bashing doctors or lawyers.)
stay safe.