Can anyone please suggest the better option for an Ms in Industrial engineering?

Best university for MSIS from the following

Hey guys/mentors,I have received admits from the below listed universities and I’d appreciate if you could help me in

I'm planning to go US for this spring 2022.I haven't taken any test so far. IELTS slots are filled till November. Looking for GRE waiver universities. I'm planning to take Duolingo test in next 5 days.

with only duolingo score will I make it to US for this spring 2022. If I start applying for colleges from Sept 15 onward

Do Professional LOR’s require any stamp from the company?

Do we need to get the lor sealed / stamped or is it not required and can we submit a pdf?

Why having a credit card is important in the USA ?

The advantages of having a credit card are dependent on what your credit scores are in the USA. Credit scores can be any