I want to transfer the balances on my credit cards to a new card w.ith a 0% rate on balance transfers?

I haven’t gotten authorized for some of the 3 cards we practical for in sequence to send the balances. So what should we do? Should we voyage the converging loan? How can we get authorized for the sort new label but carrying to move for months for my credit measure (it is in between 625 – 670) to change?