Received 1099k with transactions for cashapp that I never completed. IRS says file the taxes and enter adjustments to offset it but I do not see that option on turbotax.

IRS form 1099-K income can be reported different ways. 

Enter the fraudulent amount in the box "This amount in box 1a is too high or includes some personal transactions."

To report IRS form 1099-K hobby income in TurboTax Online, follow these directions.

• Down the left side of the screen, click on Tax Home.
• Click on the down arrow to the right of Review.
• Click on the blue band labeled Review.
• Down the left side of the screen, click Federal.
• Down the left side of the screen, click Wages & Income.
• Scroll down to Other Common Income and click on the dropdown menu.
• Click Start/Revisit to the right of Form 1099K.
• At the screen Did you get a 1099-K? click Yes.
• At the screen How would you like to upload your 1099-K? click Type it in myself. 
• At the screen Which type of income is your 1099-K for?, select the button for Hobby income.  Click Continue.
• At the screen Let’s get the info from your 1099-K, enter the information.     
• If necessary, note the box "This amount in box 1a is too high or includes some personal transactions."
• Click Continue.
• At the screen Your 1099-K summary, notice that the income relates to ‘Hobby’.  Click Done.

The entry will be reported:

• on line 8j of Schedule 1 of the Federal 1040 tax return, and 
• on line 8 of the Federal 1040 tax return.

At the top of Schedule 1, note the amount reported in error or for personal items sold at a loss.

Hobby income expense is not allowed to be reported.