To explain it simply, the main reason why people use ccTLDs is usually to target users from that same country, such as Indian users with a .IN domain and USA users with the .US domain extension.
There’s also the matter that after a lot of research and tests, it has been proven that what ccTLD you use has an effect on your SEO.
So, if you want to get a US audience, you can use a .US domain. If you want to have more users from India, then use the .IN domain.
Either way, if you want to purchase either of the two domains, I suggest using Nominus since they offer both and they’re great (IMO). You can find their respective domains here: