I mistakenly claimed my tuition credit from the academic school year starting fall 2018. My parents should claim it, since I am a dependent of there's.

Assuming that you have already filed your 2018 tax return you will need to amend the return to remove all the education expenses and the Form 1098-T if entered.

See this TurboTax support FAQ for amending a 2018 tax return originally completed and filed using the online editions - https://ttlc.intuit.com/community/tax-topics/help/how-do-i-amend-my-2018-turbotax-online-return/01/27614