I got a question about my filed Tax. I already filed on 15th last week and the app showed me Federal will be accept on 17th. But until now That's still pending.

The tax return is still Pending because the IRS has not officially opened to accept or reject tax returns - https://www.irs.gov/newsroom/irs-opens-2020-filing-season-for-individual-filers-on-jan-27

@khimhow yes the IRS officially opens on Jan. 27th, but there is a test batch that begins today, Jan. 21st to Thurs. Jan. 23rd, so you could possibly be accepted one of those days.  If not then it would be the 27th or after.