As long as you can lift the bar, you're good.
Powerlifting has gotten pretty weird with the advent of the internet. Unless you're competing at the top level, it's rare that you'll have a "competitive score", because you most likely won't have anyone to actually compete against. There are a million federations and within those federations a million divisions, and often at small shows you can be the only person in your weight class and division. A lot of folks are just chasing records at this point.
Get into a meet ASAP and find out if you even like the sport first before you spend a lot of time in the gym "getting ready" for it. You may go and get bit by the bug, or you might find out it's just not for you.