Since you are still legally married as of 12/31/2023 you have to file as either Married Filing Jointly or Married Filing Separately. But if you have a child as a dependent and provided over one-half of the cost to maintain the home and have not lived with your spouse at any time in the last six months of 2023 you can file as Head of Household.
If you are going to file as Married Filing Separately you only have to enter your spouse's name and Social Security number on your tax return. But if you live in a Community Property state there is more for you to report.
See this TurboTax support FAQ for married filing separately in a community property state - https://ttlc.intuit.com/turbotax-support/en-us/help-article/taxation/married-filing-separately-commu...
