I have what I believe are my address and password - don't know what wallet from 2017 I have what appears to be a GUID and a password.  But no recollection what service I used of if I even purchased / transferred or made a transaction with them back in 2017.  Any way to check to see if I have anything in here and retrieve it?  My current BTC is on a platform I use regularly, this was prior to me setting up my current process last year...  Any advice?
That would be a very old Blockchain.info wallet, they're the only ones using a GUID for the identifier.