REDCap used to come automatically with MyResearch access. This year the two have been separated.
If you don't have access to REDCap at redcap.ucsf.edu then start by applying for a REDCap account here:
If you've signed a DocuSign attestation form then you should get a welcome letter within minutes (it's an automated system). If you haven't signed DocuSign, I believe you'll be emailed the attestation form.