You would need to be more specific with your question. You are not providing enough information to supply a meaningful answer.
remove the battery terminals for a minimum of 10 minutes.
You can't fix it till you know what's wrong with it.
There is no way to change gear ratios.
kiss a boi twiice in a row
It is not repairable, you should replace the instrument cluster.
Replace the instrument cluster.
These parts are only fixed by replacement.
There is no fixing a broken motor mount. Replace them with a new ones.
You would fix it by replacing the instrument cluster. The speedometer itself may not be faulty, it is more likely to be a problem with the speed sensor.
My 1999 Mercury mystic was in a accident ad afterwards the the body shop repaired the damage the air will not work after it was charged. what can be done to fix the air
by licking stuff
You need to take it to a shop that does wheel alignments, it's beyond the scope of a home mechanic.