Do you mean that someone is co-signing a loan for you? When someone co-signs for a loan, they are saying that they will be responsible to repay the loan if the primary borrower on the loan does not pay. Are you agreeing to be responsible for someone else's loan and make the payments if that person does not/cannot pay their loan?
Or Is the loan for your benefit? Is someone else co-signing and saying that they will make the payments if YOU do not/cannot pay?
If you did not start a job until "this February" meaning February of 2022, then you will not be filing a tax return until next year in 2023. Tax year 2022 has to be over before you can file a tax return for 2022. Sounds like you need more clarity from the financial institution from which you are obtaining the loan.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
