Certainly, in case if you are fresher an internship would be an entry point into this vast domain. A successful internship would further allow you to explore other opportunities and since you have some work experience getting placed in a permanent role would then become easy. So, yes an internship can be much helpful for a fresher.
Ideal places to do an internship would be startups in Data Science, AI, Analytics domains, and you can find these internships posted on various internship job portals in India or on their respective homepages.