How do I get tax id for dallas texas unemployment?

You have to wait for the Form 1099-G that you will receive from the state in January 2021 for unemployment compensation received in 2020.

You should not be trying to enter your unemployment compensation under W-2 income -- if that is what you ar trying to do.  Get the 1099G from the state's unemployment website using the same password etc that you use when you certify for benefits.  It might not be available until later in January.  But the 1099G will have the data you need.

Unemployment compensation is taxable on your federal return.  Enter your 1099G for unemployment in Federal>Wages and Income>Unemployment

You might need to get your 1099G from the state’s unemployment site when it becomes available in January.

STATES THAT TAX UNEMPLOYMENT BENEFITS

AZ, AR, CO, CT, DE, DC, GA, HI, ID, IL, IN, IA, KS, KY, LA, MA, ME, MD, MI, MN, MS, MO, NB, NM, NY,NC, ND, OH, OK, OR, RI, SC, UT, VT, WV, WI

Unemployment compensation is taxable on your federal return.  Enter your 1099G for unemployment in Federal>Wages and Income>Unemployment.  You might need to get your 1099G from the state’s unemployment site.

STATES THAT DO NOT  TAX UNEMPLOYMENT BENEFITS on the state return

AK, CA, FL, MT, NH, NJ, NV ,PA, SD, TN, TX, VA, WA, WY