I filed my last years Taxes with Intuit Turbo tax, and I would like to know what my last year AGI was.

You need your 2022 AGI to efile 2023. The AGI is on 2022 1040 line 11. If you filed a Joint return you use the same AGI for each spouse.

How to find the AGI.
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/01/25947

If you didn't file 2022 or filed it later in the year or mailed it, then try entering 0 for the AGI. If that doesn't work you will have to print and mail your return.

Or request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript

Since you filed with TurboTax for the 2022 tax year it should automatically populate.  However, here is where to locate the AGI.

 

You can find your AGI on the form you used to file your last year's return.

 

Various versions of Form 1040 reflect the AGI amount on different lines:

 

• Line 11 on Form 1040, 1040-SR and 1040-NR (2020 through 2023 tax years)
• Line 8b on Form 1040 and 1040-SR (2019 tax year)
• Line 7 on Form 1040 (2018 tax year)
• Line 21 on Form 1040A (tax years before 2018)
• Line 4 on Form 1040EZ (tax years before 2018)

You can find the name of your tax form on the upper left-hand corner of your return.