As long as your vaccination meets New York's list of recognized vaccinations. Make sure you bring your vaccination record. You should not have a problem.
They don't ask for a Visa they will however ask you to show proof of your vaccinations for covid-19 your card with you along with a picture ID you'll have no problem getting in if you have those two things good luck and I hope you enjoy the concert it's a great place to go for concerts
Your best bet is to call the venue. I am sure MSG would provide more details by phone.
Not that I know of but they do check if you are vaccinated
Pfizer Johnson n Johnson Astrazeneca These are allowed only. I don't think you can travel with tourist visa.
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