my wife receives a monthly pension from a school in England. Where can I get the EIN number?. Where do I file the amount she has received?

Prepare a substitute 1099-R.  Use 99-0999999 for the Payer's TIN.

In TurboTax Online, If the pension income is to be reported, submit a substitute 1099-R as if the payer did not submit a statement when it was required.

• Down the left side of the screen, click on Federal.
• Down the left side of the screen, click on Wages & income.
• Click the down arrow to the right of Retirement Plans Social Security.
• Click to the right of IRA 401K Pension Plan Withdrawals.
• At the screen Let's import your tax info, select Change how I enter the form.
• At the screen How would you like to upload your 1099-R, select Type it in myself.
• At the screen Who gave you a 1099-R, select  Financial institution or other provider.  Click Continue.
• At the screen Enter  your 1099-R providers info, enter the information.
• Enter the dollar amount in box 1 box 2a and select '7' for box 7.
• At the screen Do any of these situations apply to you, select I need to file a substitute 1099-R.

See also this TurboTax Help that discusses the issue.

Some suggest that the income should be reported as other income.  Under this method, no TIN or EIN is required to report the income.  Follow these steps:

1. Down the left side of the screen, click Federal.
2. Down the left side of the screen, click Wages & Income.
3. Click the down arrow to the right of Less Common Income.
4. Click to the right of Miscellaneous income….
5. Click to the right of Other reportable income.
6. At the screen Other Taxable Income enter the description of the income.
7. Click Add another Miscellaneous income Item. 

The income will be listed on line 8z of the Schedule 1 Additional Income and Adjustments to Income and line 8 of the Federal 1040 tax return.