There is no evidence of ADE in COVID-19 vaccines.
ADE leads to more severe disease, and COVID-19 vaccination consistently shows high effectiveness against severe disease.
COVID-19 vaccines were specifically developed to reduce the risk of ADE.
Antibody-dependent Enhancement (ADE) and Vaccines (2021-09-09)
Why ADE Hasn't Been a Problem With COVID Vaccines (2021-03-16)
Antibody-Dependent Enhancement and the Coronavirus Vaccines (2021-02-12)