Unless you are living in a community property state, when you are married filing separately you do not enter your spouse's income on your tax return. In fact there is nowhere on the return to enter any of your spouse's income, expenses or deductions. You only enter their name and Social Security number on your return.
This changes dramatically if you live in a community property state. See this - https://ttlc.intuit.com/turbotax-support/en-us/help-article/taxation/married-filing-separately-commu...
