Competition Permit/License

This may by a wacky question but, I am getting my logbook signed after each DE and the TT's I have completed.
How many sign-off's do I need for my comp. permit and once I get my permit/license what does that enable me to do other than being able to drive alone at DE's and TT's?
Is this also the hurdle for club racing?
thanks
How many sign-off's do I need for my comp. permit and once I get my permit/license what does that enable me to do other than being able to drive alone at DE's and TT's?
Is this also the hurdle for club racing?
thanks