Hi @Rachna Harlalka,
Thank you for posting in this community.
Per the description shared, I understand your concern but SharePoint can't add separate columns for a folder, required columns affect the entire SharePoint Document Library. This is designed by SharePoint and there is no way for us to change it for now.
I recommend that you add the two folders to separate document libraries. One document library should manage files with the same columns.
Thank you for your kind understanding.
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