Hello @shan521,
Welcome to the Community. I'd like to begin by congratulating you on starting a new company.
As @Regina_Lend_A_Hand_Accounting mentioned, it's generally recommended to record company expenses paid for with personal funds using a journal entry and tracking it with an equity account. I'm including an article that guides QuickBooks Online users through the process of creating the journal entry, as well as the steps for reimbursement: How to Pay for Business Expenses with Personal Funds.
Additionally, as you're starting a new company, I want to ensure that you're getting the most out of your QuickBooks Online account for your business and am including the link to tutorials: QuickBooks Tutorials.
I'm confident that these resources will help you with recording your money that was used to pay the expenses of the company and that's now owed to you.
Wishing you the best of luck on the journey of starting a new company and embodying the entrepreneurial spirit. Have a lovely week ahead.
