I received a series EE bond with a face value of $50 that I cashed in in 2020 for $54.54. Do I include this in my tax return?

You will report the interest earned ... the bank should have issued you a 1099-INT if the amount of interest was $10 or more. 

Yes, you need to include the interest income $4,54 in your income. 

To do it in TurboTax go to:

1. Wages & Income or Personal Income section 
2. Interest & Dividends 
3. Select Interest on 1099-INT                                                                             
4.  If the bank where you cashed the bonds does not issue the form 1099-INT  you should report the interest as if you received the form. Use the bank name as the payer and enter the interest in box 3