What does able to be claimed as dependent mean? I was claimed as dependent in 2018 and 2019, I told the person to not claim me for 2020, so that automatically removes me from being able to be claimed or what do I have to fill out some irs form for that?
If there was someone that could, or did claim you as a dependent in the past they would have to amend their past returns to make a change.
However, if they did not claim you as a dependent for their 2020 taxes. You will simply be able to file a return stating that no one else can claim you as a dependent, and no other documentation will be needed.
I was claimed in 2018 and 2019 by my parent with my authorization, they won't claim me for 2020 though so I'm fine or I still have to do paperwork to amend to file my recovery rebate for 2020 tax return? This is my 1st time ever filing a tax return...
If you're "able to be claimed as a dependent", it generally means you meet the dependent qualifications, even if no one claims you as a dependent. See Who can I claim as my dependent?
If this is your first time filing, you don't amend your tax return since you never filed a tax return. To prepare your 2020 income tax return, create a TurboTax account. Click here and follow the onscreen instructions.
If you qualify to for the stimulus payment, see How do I claim the Recovery Rebate Credit in TurboTax?