If you don't currently have any active credit tradelines/accounts (excluding any phone bills), there may not be enough information on your credit report for Equifax to generate a credit score. You may need to wait until your report has more credit accounts before you're able to see a score.
If you do have active credit tradelines/accounts on your credit bureau file, it is possible that Equifax may have more than one file created for you in their database. You will need to contact Equifax at 1-866-828-5961 to inquire where your missing accounts are and whether they're on a different file that needs to be merged by the bureau. Once your files have been merged, you should be able to see your actual credit score and complete credit report at your next credit update with us.