Accepted means your return was received by the government and the basics like your social security number seem to be in order.
After acceptance, the next step is for the government to approve your refund.
Please see the TurboTax FAQ below for more information:
https://ttlc.intuit.com/community/tax-topics/help/what-does-accepted-mean/00/966841
Please see the TurboTax FAQ below for more information on tracking your tax refund:
https://www.irs.gov/refunds
The below information explains the process of what happens after you send your tax return for approval:
https://turbotax.intuit.com/tax-tips/tax-refund/wheres-my-tax-refund-the-irs-refund-timetable-explained/L9ZoW82cT