To get sports cards graded, you send them to a professional grading company like PSA, Beckett, or SGC. First, check the card carefully for corners, edges, centering, and surface condition since that affects the grade, then create an account on the grader’s website, choose a service level based on the card’s value, package it securely (usually in a penny sleeve and semi-rigid holder), and ship it to them. They’ll inspect, grade, and seal it in a protective case before sending it back. If it’s your first time, I’d suggest practicing with lower-value cards first since grading fees can add up fast.