is there a trick to evolve meowth cobblemon?

No trick, it follows the normal games. Regular Meowth goes to Persian at level 28. Galarian Meowth evolves into Perrserker, also at 28. Alolan is the odd one, that one needs high friendship rather than a level, so keep it in the party, feed it berries and don't let it faint. If yours is sitting at a high level and not evolving, check which form you actually caught.