Within OneDrive PC Version, there are two methods to share an item. Note that the second option requires for a file to be opened on a Microsoft Office application.
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Right click the item you would like to share
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In the dropdown menu, click the “Share” option with the OneDrive logo
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In the popup, type in the person’s email. Click the pencil icon to customize their access permissions.
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Click “Send” to confirm
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With the file open, click “Share” at the top right
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In the popup, type in the person’s email. Click the pencil icon to customize their access permissions.
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Click “Send to confirm”