Vlookup across multiple sheets and data points

Hi and welcome to the forum

You could probably do this with INDIRECT() for the sheet, and maybe vlookup() or index/match

Attach a sample workbook. Make sure there is just enough data to demonstrate your need. Include a BEFORE sheet and an AFTER sheet in the workbook if needed to show the process you're trying to complete or automate. Make sure your desired results are shown, mock them up manually if necessary.

Remember to desensitize the data.

Click on GO ADVANCED and use the paperclip icon to open the upload window.

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Try this, copied down and across....

=INDEX(INDIRECT("'"&$H$3&"'!$C:$K"),MATCH(Before!$L$3,INDIRECT("'"&$H$3&"'!$A:$A"),0),MATCH(Before!$A10,INDIRECT("'"&$H$3&"'!$C$7:$K$7"),0)+COLUMN()-7)