Linking 2 Apple IDs

AppleIDs are unique, individual login IDs for Apple services. You cannot link any AppleID account or the service account associated with it (iCloud, iMessage, FaceTime, etc) to any other.

But you use family sharing to share iCloud storage and you can share files and folders in iCloud Drive with others.

Share folders with iCloud Drive - Apple Support

I need too

You can't link iCloud data to two Apple IDs. All iCloud data is tied to the Apple ID used to sync the data to iCloud.

Can you help me?

Thank you Eric

Thank you

You are welcome.