Hi @Jadhav, Jyoti
Did you encounter any issues after granting OneDrive Access to another User?
If you want to share files to external users, you may allow organization-level external sharing setting.
There is no distinct limit to the number of guests you can invite. The guests can perform tasks on a site based on the permission level that they've been given.
The supported limit of unique permissions for items in a list or library is 50,000. However, the recommended general limit is 5,000.
For more, you may refer to: SharePoint limits. (OneDrive for Business is like a personal site, SharePoint limitations also apply to OneDrive for Business.)
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