Does it just spin ?

It's a push button electric starter and when I push it it just clicks and doesn't start the engine.

The starter gear could be stuck in the engage position , if it has a pull on it you might try pulling it a couple of times this could release it.

It's a push button electric starter and when I push it, it just clicks and doesn't start the engine.

Where is the starter gear?

How can I go about fixing this?

Try to replace the spark plug