I assume you are looking for Schedule C for 2023. Schedule C is for self-employment income or business income from a sole proprietorship or single-member LLC. Did you have such income in 2023 and file a Schedule C with your 2023 tax return, or is the loan officer asking for something that doesn't exist? Is there an amount on Schedule 1 line 3 in your 2023 tax return? If not, there is no Schedule C. Did you already give the loan officer a copy of your tax return and it does not include Schedule C? If so, it's probably because Schedule C was not required. The loan officer might be mistaken in thinking that you had income that requires Schedule C.
If you did file a Schedule C, it's in the PDF of your tax return, shortly below Form 1040 and Schedule 1. xmasbaby0 gave you information on how to find your 2023 tax return.
