Generally, you will only receive a refund if the refund exceeds your total balance due on all outstanding tax liabilities including accruals.
If you have an installment agreement on another tax period, one of the conditions of your installment agreement is that the IRS will automatically apply any refund (or overpayment) due to you against taxes you owe. Because your refund isn't applied toward your regular monthly payment, continue making your installment agreement payments as scheduled.
But if you are facing a serious financial hardship and need your refund immediately, the IRS can consider not following its usual procedures of taking the refund. Instead, it may release and expedite part or all the refund to help with your hardship.
Request an expedited refund by calling the IRS at 800-829-1040 (TTY/TDD 800-829-4059).
The IRS will likely request documentation of your financial hardship such as copies of shutoff notices, eviction or foreclosure notices, etc., as well as other supporting information like a copy of your tax return with the refund claim. Respond promptly to the IRS’s request.
Please see this link for more information.