one of my Vaejovis carolinianus had a brood yesterday. this is the first brood ive had. how long should i wait before i try to feed the mother scorp? would it be ok to give her a cricket now or should i wait untill the babies molt and start to scatter?

Once the babies molt to for the first time to 2nd instar is when I'd say you can feed them. Ensure you allow enough time for their exos to harden.