If your federal tax return was accepted before the IRS started processing tax returns when would I receive the money I was approved for through the cash advance loan?

You should receive your refund advance loan within 1 hour after the IRS has Accepted your return. Please see the following Turbotax FAQ for more information, https://ttlc.intuit.com/community/refunds/help/about-receiving-your-refund-advance/00/27510

I want to know if is to late to apply for cash Advance because my tax already files and been accepted

Yes. You can only file for the cash advance prior to filing your return. @Nerline1997