e-filed om March 15 saying i owed 5787. Printed this morning and it printed that i had a 501 refund. I didn't change anything. Should I send the 5787???

Did you report a 1099-G for unemployment comp?  The program has been updated to reflect the new $10,200 deduction for that.  You generally do not need to amend for Federal.

 However, taxpayers would have to file an amended return if they did not originally claim the EITC or other credits, but now are eligible because the [unemployment comp] exclusion changed their income.  These taxpayers may want to review their state tax returns as well.

IRS begins correcting tax returns for unemployment compensation income exclusion; periodic payments to be made May through summer | Internal Revenue Service

Although your change is quite large, the Unemployment Exemption may have also changed your EITC or other tax credits.  See these re State:

How is my state taxing unemployment income? (intuit.com)

Do I need to amend my state return to update my un... (intuit.com)

No. You qualify for a refund so payment is not due. You will need to file an amended return if you now qualify for credits that were not on your return. You may need to file a state amended return.

You need to compare your current return to your original. If the credits were on your original return, the IRS will recompute it with the unemployment. If there are new credits, you must file an amended.

• Save a copy of the original return before doing an amended return. See: 
  • how to file an amended return. The program will remove the $10,200 of unemployment and change things for you.
  • I need to amend my state return.
  • Can I e-file my amended state return?
  • Can I e-file my 1040X to amend my return?
• Track amended return status online. Taxpayers can track the status of their amended tax return in English and Spanish using Where’s My Amended Return?  Amended returns take up to 16 weeks to process and up to three weeks from the date of mailing to show up in the system.