On turbo tax it says my refund was accepted. When I track it, it says its being processed. So what is going on

Once a tax return has been Accepted by the IRS or a State, TurboTax receives no further information concerning the tax return or the status of any tax refund

After the tax return has been Accepted by the IRS (meaning only that they received the return) it will be in the Processing mode until the tax refund has been Approved and then an Issue Date will be available on the IRS website.
See this IRS website for federal tax refund FAQ's - https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions

But turbo told me it was accepted.  Other people have received their taxes back. Its been over 3 weeks since I filed