You have a typo in your question so we cannot tell what you really filed or when. But if you filed a 2018 federal return anytime since October of 2019, the only way it could have been filed correctly was by mail. It takes the IRS a long time to process mailed returns, so if you filed it recently you will be waiting for at least a couple of months and probably longer. A 2018 return is not going to show up on the IRS refund site so all you can do is wait patiently for them to process your return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**