What is the lowest, average, and the highest CTC offered at NICMAR Pune campus for ACM? Having 2 years of experience, what package can I expect?

There is no such thing as lowest CTC in NICMAR. It's very clear that if you don't perform well during the interview you will not receive any job offers. 

Now talking about the salary package, the batch of 2020 received an average package of 6.75 LPA. The placement percentage was recorded to be 99.2%

Coming to the question regarding how much you could expect depends upon various factors like your academic performance, the ongoing market scenarios, and your performance on the day. Additionally, if you have two years of work experience then it will all go well and you can even expect a package above 5 LPA.