Computing date difference in SQL query

2022-09-26T15:49:04Z

I need to ascertain the date difference using a flowing query but it does not work. Please Guide.

SELECT ID, VoucherNo, DateRec, ProductID, Description, ClaimantCo, ClaimantName, City, Phone, DateReturn, ReqJob, WSIns, Remarks, Status, Part1, Part2, Part3, Part4, OtherWSCharges, FDCharges, P1Charges, P2Charges, P3Charges, P4Charges, DateJobBegun, DateJobDone, WSRemarks, TotChargesFromWS, DeliveryStatus, DateDelivered 
FROM tblClaims 
WHERE DateDiff(dd, DateReturn, GETDATE()) =3

Before trying this I have also gone through some resources here but was not sure what I am doing is correct is not, My motivation is to get records for which three days are passed on to DateRetun, contrasting with the present date.