The question is what are you trying to do? Instagram, and really all social media, is kind of it's own world. You can be Instafamous (famous on Instagram) and not really have anything come of that in the real world other than some opportunities for product endorsements.
In my experience, likes almost never turn into sales. The people who like things aren't interested in buying stuff. They're generally just hopping from one trend to another and never really focusing on any one thing. The medium fuels short attention spans, after all. I tried the Instagram/Facebook/Twitter trio back when I was painting. I found it a total waste of time. Some galleries (usually just the small ones who rarely made any sales anyway) looked at that stuff as important, but for me, it never translated into a sale and it occupied far too much of my time and energy.
Another thing that's weird is that the things that people like most on Instagram/Facebook/Twitter, etc., aren't the things that people like the most in the real world. For example, a well conceived and executed photo of something that maybe wins some awards in competitions will gather far fewer positive responses on social media than a photo of some train tracks with a low camera perspective and some light leakage. Some people may even be willing to pay you money for a print of the first photograph, but no one will pay for a print of the second photo. Yet the second photo will see much more engagement. It's weird.
It is, however, a good resource for inspiration. And you can post stuff and get some feedback, which will mostly not be worth reading, but occasionally something worthwhile will pop up that you hadn't thought of.