I would like my stimulus to be in check form

[KathrynG3]

To get the stimulus payment in paper check form, contact the IRS directly. Otherwise, the account on file will be used. If it is no longer available, then the IRS would issue a paper check.

To check what account is on file with the IRS, check: Get My Payment 

If your return has been filed, then call the IRS at 800-919-9835 (phone assistance is very limited) or see this help article from the IRS for more details:

Economic Impact Payment Information Center — Topic D: Receiving My Payment | Internal Revenue Servic...