why am I being charged for my federal tax return?

Looks like you are in Deluxe, not the Free Edition.  How to review your fees
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/00/26353

To go back to a lower version or the Free Edition you can try to clear and start over https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-online/00/26444

If you started your tax return in TurboTax Free Edition (Form 1040 with limited credits; roughly 37% of taxpayers qualify), you won't need to clear and start over. You can select Switch to Free Edition instead.

In the Turbo Tax Free Edition, information that you can enter is limited now.  Why do I have to upgrade from the Free Edition?
https://ttlc.intuit.com/community/upgrading/help/why-do-i-have-to-upgrade-from-free-edition/00/26379

Or try the IRS Free File program
https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free

The TurboTax Free online edition is for very simple tax returns that do not require any other form or schedule other than the Form 1040.  If your tax data requires entry on any other form or schedule then you must upgrade to the Deluxe edition or higher.

If you have not paid for the online edition you are using, have not filed your tax return or registered the Free edition, then you can clear your return and start over with a lower priced edition. Click on Tax Tools on the left side of the program screen while working on the 2024 online tax return. Click on Clear & Start Over.

Go to this TurboTax website for the Free online edition - https://turbotax.intuit.com/personal-taxes/online/free-edition.jsp

Please Note -

TurboTax Online: Important Details about Filing Form 1040 Returns with Limited Credits

A Form 1040 return with limited credits is one that's filed using IRS Form 1040 only (with the exception of the specific covered situations described below). Roughly 37% of taxpayers are eligible.

If you have a Form 1040 return and are claiming limited credits only, you can file for free yourself with TurboTax Free Edition or TurboTax Live Assisted Basic (if available), or you can file with TurboTax Full Service at the listed price.

Situations covered (assuming no added tax complexity):

• W-2 income
• Interest or dividends (1099-INT/1099-DIV) that don’t require filing a Schedule B
• IRS standard deduction
• Earned Income Tax Credit (EITC)
• Child Tax Credit (CTC)
• Student loan interest deduction

Situations not covered:

• Itemized deductions claimed on Schedule A
• Unemployment income reported on a 1099-G
• Business or 1099-NEC income
• Stock sales (including crypto investments)
• Rental property income
• Credits, deductions and income reported on other forms or schedules