Can i change my mailing address ?

No one here can send you anything ... only you have access to your own account.  And a W-4 is filled out and handed into your employer ... they can give you one to fill out.

If you completed a new one when you did your return then save a PDF of the return WITH the worksheets to find that one you completed.

To access your current or prior year online tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)

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When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state. 

This will take you back to the 2020 online tax return.

Click on Tax Tools on the left side of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.  Choose the option Include government and TurboTax worksheets

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@napoli-980 wrote:
can you send me my W4 form tax for 2021 to my new address please?

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Do you mean your W-2? That comes from your employer. You have to notify all your 2021 employers, current and former, of your new address.

TurboTax does not send you any forms.

If you mean W-2 not W-4 - (which is a form *you* give to your employer) then your employer sends it to you.     Update your address with your employer.