You have to ask McDonalds for it. In fact you should have 2 W2 forms one for 2023 and one for 2024. Each year is separate. You would have gotten the one for 2023 a year ago and should have filed a 2023 tax return for it.
You have to get another copy from the employer or from Social Security
How to get a W2 copy from SSA
https://faq.ssa.gov/en-us/Topic/article/KA-02501
