I’ve seen batteries last 3-8 years on a typical car driven daily.
I had a friend who drove 1/2 a mile to work every day and his battery lasted barely a year.
I’ve seen batteries gradually get weak and I saw one suddenly go completely dead with no warning in the hot desert in Arizona.
If you’re in a hot climate I recommend you just change it and not rely on testing because they’re more prone to sudden failure in the heat.