How much tax will get back if I've earned roughly $26,000?

Who knows

Not enough information for even a guess

No way to guess. It's what you had withheld for income tax that counts. If you had more withheld than you end up owing, you get the excess back.

that will probably depend on how much has been withheld, if not enough you will owe, if too much, that will depend on any adjustments you can make to your non taxable income

No way to say. It's entirely possible that you would not get any refund at all but would have to pay when you filed.

Tax refunds are not based solely upon your income. They are based upon your tax liability and how much tax you paid in and any credits that you may be eligible to claim.

You will not tax back. Tax is what you pay.

Maybe $0, maybe you'd owe, maybe $1000 or more. It doesn't go just by what you make. It depends on what withheld, filing status, etc

It depends upon how much you have paid in.

A tax refund is just getting your own money back like getting change back at a store.

No idea. How much tax did you pay? What deductions do you have if any?