how do we set the anchor date at V_score tool? just any day before 120 bars? as in its settings?
I haven't been in Raghee's training or mastery subscription so I can only answer based on what I've pieced together from her YouTube videos. I listened to all of her Charts and Coffee videos and futures day trading videos while I was working on scripts and other things.
The 120 bars thing is only used for the clouds (shaded areas) in TOS Indicators VScore. Raghee's doesn't have that feature so 120 days isn't relevant to anything in her trading (as far as I know). And I liked that setting better at 30 rather than 120 when I played with that indicator.
For daily charts, I think Raghee anchors VScore to the first of the year. But when a new year starts she waits some number of days before she changes the anchor. She does the same with one of her anchored vwaps. It's possible she changes it throughout the year but I haven't heard her mention it yet.
For intraday, I don't think she's mentioned the VScore anchor time in her YouTube videos. She has intraday anchors for the 2 vwaps she uses. One of them, if I remember correctly, she anchors to 4am and the other I think 7am but it might be 9am, I can't remember. It's possible she also anchors VScore to one of those times.
If I was trying to reverse engineer her settings I would use OnDemand and bring up a chart she shows on whatever date and start with anchoring to 4am to see if it matches. If not, I'd try 7am and other times trying to find a match.