When filing as Married Filing Separately you each receive a Standard Deduction of $12,400 for tax year 2020.
The amount is shown on the 2020 IRS Form 1040 for standard deductions Line 12 - https://www.irs.gov/pub/irs-dft/f1040--dft.pdf
When filing separately both must use the standard deduction or both must use itemized deductions.
