I'm asking how to boost while keeping the balances high also when paying will the credit score go up immediately and then I'll get approved for all credit cards?
You have a lot to learn. I suggest researching this up thread and elsewhere online.
You can't magically fix your FICO without paying off you balances if that's what's effecting it.
To keep it at the best you can WITH high balances here's a few things to keep in mind.
A. Try to pay some off before the statement closes so the balance reported will be lower.
B. FICO works with accomplishments, so look out for key numbers. Utilization of 54% is virtually the same as 55% while from 49% to 50% is a world apart.
Try to keep your utilization below these numbers, each number is a step 100%, 99%, (95%,) 90%, 75%, 50%, 30%,10%, and from there down.
There are 2 ways your utilization is looked at, it's looked at overall, and at specific cards as well, so try to keep it overall below those numbers, as well as each card specifically. Another key point is how many cards have balances, try to keep that lower as well.
C. Increasing the positives on the other points of your credit can hide the not so beautiful parts.
~never miss a payment.
~keep a fair amount of cards open.
~it's nice to have a mix of type of credit.
~don't try opening lots of new cards.
D. You're credit will increase as soon as your updated account is reported (assuming you improved something). Each bank will report at a different time, but as soon as its reported those changes are there.
E. If you do pay of all your balances, depending what your credit/balance is like you can see a major immediate improvement which definitely can help those approvals come easier. But again it depends what else is on your report.