If you want to share the files you’ve added to your Sheets or Docs do the following:
Share all files uploaded.
Go to settings and select the type of access the users of the uploaded files will have.
Share files one by one
Step 1
Click on the file name/link to open the preview page of the file.
Step 2
Click on the title, this will open the file in a new tab.
Step 3
In the preview panel you can share the file by clicking the 3 dots in the right corner. Click share to open the sharing screen.
Step 4
When the share screen opens add the email of the user you want to share the file with.
Share Files in Bulk
Please follow the instructions here.