If you have no income of any kind there is no need for you to file a tax return with a filing status of Married Filing Separately. Your spouse can file their return as MFS and any interest earned can be entered on their tax return.
However, filing MFS is usually the worst way for file when married. See this TurboTax support FAQ for filing separately - https://ttlc.intuit.com/turbotax-support/en-us/help-article/taxation/better-married-couple-file-join...
