Will someone tell me how to fix wrong information regarting employment? I am retired.

An amended return is required for two corrections: 

1. Remove wages
2. Report Retirement

First, start the amended return:

• With your tax return open after having filed the return, you will be at Tax Home. 
• Scroll down to Your tax returns & documents and Show.
• Select Amend(change) my return. 

For more details, see: How do I amend my 2020 TurboTax Online return?

Second, only after the amend process has been started, then,

1. In the search box with the regular left menu seen, enter w2 in the search box.
2. Select the Jump to link in the search results.
3. Select the trash can icon next to the W-2.

Next, enter the Retirement income:

1. From the Wages & Income tab, scroll down to Retirement Plans and Social Security and find IRA, 401(k), Pension Plan Withdrawals (1099-R) and Start.
2. Follow the prompts. If you do not want to import, scroll down and select Change how I enter my form.
3. To type it in yourself, at How do you want to add your 1099‑R?, select Type it in myself in the lower right corner. 

For more information, see: When to Use Tax Form 1099-R: Distributions From Pensions, Annuities, Retirement, etc. - TurboTax Tax Tips & Videos