Is there a way to add a bonus that equals your proficiency to something in home-brew created races/sub-races, if so how?

Sure. For the AC modifier (there are a few, I think minimum base armor is the right one), under fixted value there is a field labeled additional bonus type. Just set that to proficiency bonus.

Hmm I think I've already done that and it's not adding to it.

Modifier Type: Damage

Modifier Subtype: Natural Attacks

Additional Bonus Types: Proficiency Bonus

The rest of the fields are blank. I've also added the natural attacks to the subrace not the race.

I managed to get it to work for the AC but not the attacks

Figured it out. I selected strength and now it works.

Thanks for trying to help an absolute idiot DxJxC

The problem is probably the subtype. I dont know what "natural attacks" actually modifies. Did setting fixed value have any results?

What attacks are you trying to give a bonus? Unarmed strikes?

[Edit] Glad it works.