Hello, I mailed my documents for my tax refund 3 weeks ago but I still don't have any news, and the IRS website doesn't give me any information

When you mail your return, it takes about 4 weeks before you can start checking the status on the IRS site:

To track your Federal refund:   

https://www.irs.gov/refunds

To track your state refund:    

https://ttlc.intuit.com/questions/1899433

When you mail your return, it takes about 4 weeks before you can start checking the status on the IRS site:

To track your Federal refund:   

https://www.irs.gov/refunds

To track your state refund:    

https://ttlc.intuit.com/questions/1899433