Tesla ‘Charger’ for 120V/240V input is actually built into the car, and it’s technically a wall connector.
One can use the 120V wall outlet and have no more than maybe a heavy duty extention cord, though charging times would be a fair amount longer with 4–6 miles per hour of charge rate.
If you have a 240V outlet already in place, then one can use it to connect the wall connector to, and the wall connector is about $500.
If not then you’ll want a professional electrician to install one. Typically around $350-$500 for a basic simple install. Though if you have an old fuse style panel, you’ll need to upgrade the panel from more than 50yrs ago, then it could be a bit more costly panel upgrade at the minimum. But that should have been done a long time ago.