Forgot Excel Password

You may try to search here what is in title of your post, lot of threads are here

Some of them are on many pages as I remember.  Perhaps these two could be useful

https://techcommunity.microsoft.com/discussions/excelgeneral/remove-password-from-excel-spreadsheet/2936709

https://techcommunity.microsoft.com/discussions/excelgeneral/excel-sheet-forgotten-password/3545763

Seems there is no way to recover, you may consider some 3rd party tools for help

https://learn.microsoft.com/en-us/answers/questions/5569332/how-can-i-unprotect-excel-sheet-as-i-forgot-the-pa