Score verification subject tests

I got really low scores on my SAT Chemistry and SAT math 2 and i am planning to order score verification/hand score verification. Is anyone else experiencing this(november 2017) and is snail mail the only way to request for score verification?

also, if scores do change, will the verified score be sent to the colleges i have already sent my scores to? or i have to pay extra fees to send the verified score as well