Guntlet Private Challenge - earn objective score in a Gauntlet mission”

Having specific trouble with the “Guntlet Private Challenge - earn objective score in a Gauntlet mission” been trying to complete this for months and it’s just not adding to the mission. Can you guys please help me with this I’ve tried everything and I thought it was going to get fixed after the update but I guess it was missed? If I could have help or anything at all please let me know. THANKS

ps …fr fr I’m about to lose my S$%T This the last 3 😂😂😂 IYKYK