In my first year for home business LLC. I made no income. Turbo Tax is requiring an income amount in order to claim a simplified home office deduction.

No, you can't take a Home Office Deduction if your Business had no income.

However, it can be carried over until you do have Business Income.

Click this link for detailed info about the Home Office Deduction. 

no income schedule c 2021.  Turbo not letting me deduct home office expense, yet community says i can.  If that's true, how can i bypass system and enter the standard home office deduction as I have in past 10 or 11 years.

If you do not have business income for 2021, you cannot claim the home office deduction.  The thread you have posted on also states this.

@StarRaider30