need help with uploading lease agreement and social security award letter and landlord info

You do not "upload" a Social Security award letter.   If you have been receiving Social Security benefits in 2024 you key in----by hand---your SSA1099 that was mailed to you by SS in January.  Or you get the SSA1099 from the SS website.

 Go to Federal> Wages & Income>>Retirement Plans and Social Security  (SSA1099 and 1099RRB) to enter your SSA1099.

GET SSA1099

https://www.ssa.gov/faqs/en/questions/KA-01723.html

As for the rent and/or landlord information---that goes into your state return if you are in one of the states that has a credit or deduction for rent.  What you are required to enter will vary by what state you are in.

There is not a rent deduction or credit on your Federal return.  If your state has anything for renters you will be prompted to enter your rent info when you complete your state return.  As far as I know, the states that have anything for rent are Arizona, California, Connecticut, Hawaii, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Jersey, New York, Rhode Island, Vermont, Washington DC, and Wisconsin.