Here are some things you can do:
These will make the Pokemon gain EVs quicker. However, the stats at the end won't be much higher.
level up your GOLBAT with high happiness.
You level him up on a high friendship level, I suggest the "sooth Bell" found in the Pokemon Mansoin second room to the left.
you can get it in the wayward cave, battle frontier shop, or a high level Pokemon that has the ability pickup
you spread honey on a tree and get munchlax then level it up with high enough friendship
It does not evolve at a certain level but Cleffa evolves into Clefairy when you level it up when it has high friendship. It then can evolve into Clefable when exposed to a moon stone. Happy Pokemon Catching J.R.
um e leveling
level up your GOLBAT with high happiness.
you have to level up at a high friendship level.
Their Pokemon are actually pretty crappy. Have a good, high level Pokemon or cheat
It is a pond with many high level magikarp and one level onehundred magikarp.
You level him up on a high friendship level, I suggest the "sooth Bell" found in the Pokemon Mansoin second room to the left.
you spread honey on a tree and get munchlax then level it up with high enough friendship
you can get it in the wayward cave, battle frontier shop, or a high level Pokemon that has the ability pickup
You can buy them with points from battle tower or find them as items or get a Pokemon with pickup ability at a high level to find them
you don't have enough badges. When the level gets too high, they won't listen to you. Same applies to all Pokemon games.
If your question implies that you caught a Pokemon that has already passed the minimum evolving level, but has not yet evolved, simply level it one more time, and it should evolve. (However, it CANNOT be level 100 already.)
It depends on what level your Pokemon is at if low it should be quicker if high should be longer