At this stage, I think you've got the point. By using a formula as a dimension in a single row table with no grid & no metric, you'll give your users the sensation that they are really dealing with a dynamic title (which is indeed the case, but in a tortuous way).
Don't forget to format
As usual, once your formula is working and showing what you want it to and when you want it to, you need to proceed to the style ribbon to make some formatting so your dynamic title looks good.
Please remember that we're using a dimension here, so you need to update the settings accordingly to see the changes applied on your page.
Last but not least, try to put your title to the very top of your page, as in the "table box" must touch the top border, so users can't click on the table nor see the options when hovering the mouse.
And eventually, an example of the powerful things you can do with using formulas like CONCAT( YEAR(CURRENT_DATE()) , ' - Week ' , WEEK(CURRENT_DATE()) , ' to date'). This title is fully dynamic and gets updated...well, every week, you damn right!