It’s pretty standard for US universities to require international students to pay full tuition. They also often have to provide proof of funds to cover their entire tuition before they are accepted.

You can literally Google school + international students and they will tell you all of what’s required. A quick google search confirms what I told you you at least for Penn State. International students are not offered any kind of financial aid. And you you to prove you have funds to pay tuition in full before attending.

On a student visa, you probably won’t be able to work. Except maybe at the school. MAYBE.

A student visa? Again. You can look this up yourself.

Pennsylvania is as safe or dangerous as any other place. Stay out of sketchy areas and dark alleys alone at night and you will likely be fine.

You’re going to have the exact same situation no matter what state/location as far as type of visa required and tuition payment requirements.

Generally Universities in the US do not give many scholarships to international students. Most scholarships and financial assistance is reserved for people within the country. However, there may be some available, I would do some research online as well as in your country, I know a few have grants for students studying abroad.