Can I get a certificate during the 7-day free trial?

Hi @donny.lee,
Yes, you can. But please note that on the 8th day, the free trial will become a paid subscription. Also, you will need to give your credit card info to be able to start your Specialization. So, I would suggest that you read this Article carefully before starting your learning journey:
https://learner.coursera.help/hc/en-us/articles/115001278026-Free-trials-for-subscriptions

Hi @donny.lee ,

I've finished a Spesialization course in 6 days. I got my certificate and then I canceled my subscription.
They didn't charged me.
But in order to start the course you must give your credit card.
Until now I don't have any problems with that.

Is your certificate still valid even after you canceled subscription to the course?

Hi @Simone Pongi. Yes, if you earn a certificate during a 7-day free trial, it will remain valid.