RepairPal Certified shops can diagnose and repair your 2002 Acura MDX. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
We will need a lot more details but if you are having a transmission issue and you don't work on your own cars you will have to bring this to a shop for a complete diagnosis.
https://repairpal.com/repair-shops
Alex