Do reptiles have lymph nodes

No. Reptiles do not have lymph nodes as mammals do. Reptiles have lymph tissue in certain organs, particularly the spleen, but no peripheral nodes. They do have valves along the lymph perivascular areas though, sometimes called lymph "hearts", but these are not directly comparable to lymph nodes for trapping of toxins.

Source: Infectious Diseases and Pathology of Reptiles By Elliott R. Jacobson

"Although reptiles lack discreet lymph nodes, they do have less structured lymphoid cell aggregates within intestinal and pharyngeal mucosa."

Source: Investigative Immunotoxicology By Helen Tryphonas