For your request, to change the position of the Product Questions tab on the product page, please follow the steps below:
1, Go to the file Bss\ProductQuestions\view\frontend\layout\catalog_product_view.xml
2, Add the following code:
<argument name="sort_order" xsi:type="string">number</argument>
to this position: https://ibb.co/PmrL42J
The sort order number should be filled as 10,20,30, etc (even numbers) so that the Product Questions will be placed at the expected position (The tab with the smaller sort order will be placed in the first position and vice versa).
For example, if you set the sort order number =30, the Product Questions tab will be in the last position: