hi and welcome ,
White patches or bumps on gums can be due to ulcers bacterial or viral, infected gum abscess, ulceration of the tissue due to trauma , fungal infections like candidiasis
, malignant conditions like leukoplakia
seen due to chronic habits if tobacco chewing
Since the area is not painful ,confirmation can be done only after clinical examination by a dentist
So till you see a dentist , i would suggest you to apply topical oral antiseptics like dentogel over the affected area to prevent infection.
use chlorhexindine mouthwash to rinse the mouth , start with antioxidants Lycopene
2000mcg 2 times daily for 5 to 7 days which helps in tissue regeneration and healing.
i hope this helps,