You can click on it and rename it before export, or simply let the export happen and rename it after.
Great, thank you!
If you have Created a New Sequence by the often recommended method of dragging a clip onto the NEW Icon...the sequence will be the same name as that particular clip.
Rename your Sequence as soon as you have created it...to something relevant.
The Output name is always the same as the "sequence name" but you have the option to change that as pointed out.
Excellent advice. Thank you!