How much will it be to trade my iPhone SE 2nd gen for iPhone 11?

If you are in the U.S. you can get a trade estimate in the "Select your device to get a trade-in estimate." section of Apple Trade In - Apple

and the price of a new phone at Buy iPhone 11 - Apple

Would like to know value of iPhone SE serial number FF***PLJQ

[Personal Information Edited by Moderator]

See previous answer above. Click on the blue text to go to the trade site to get an estimate.