Why am I not able to click on the 1099 button to finish my taxes. I do have a SSA-1099 to enter, but the but says "it is not supported"

To enter Social Security benefits reported on form SSA-1099

Click on Federal Taxes (Personal using Home and Business)
Click on Wages and Income (Personal Income using Home and Business)
Click on I'll choose what I work on (if shown)
Scroll down to Retirement Plans and Social Security
On Social Security (SSA-1099, RRB-1099), click the start or update button

Are you doing a 2022 return or 2023?  The 2023 1099 section might not be ready  yet.  There will be many updates to come.  You can try filling it out in Forms mode.