I'm not too familiar with the Office Script API but my understanding is it is similar to the old VBA model. So given a worksheet (which you can get from the workbook) you should just need to call Activate on it. The link has an example of how you might use it.
How to move between sheets in Excel using Office Script

Soliman, Mohamed
1
Reputation point
Hi,
I used to use VBA to create a button to help users move from a sheet to another sheet in the same workbook. How can I do the same using Office Script?