How to report STA (Timing Analysis) just post-Synthesis but before P&R (Placement and Route)?

You don't understand ... Please read again what I wrote:

Let's say I'd like the script_1.tcl would be executed after RTL Analysis & Synthesis, the script_2.tcl would be executed after Fitter stage, and the script_3.tcl would be executed after Timing Analysis stage. How can I do so?

So, the script_1.tcl, script_2.tcl, and script_3.tcl should be executed in the different stages of the flow. How to do so? In my guess, It should be some attributes in QSF, which would define at what stage each script should be executed.

Thank you!