Iphone 14 Pro Battery Health
My Battery Health Dropped to 98% after 7 months of use
is this normal ?
It's actually very better that normal.
Batteries degrade over time with usage due to chemical aging, that's just how they work.
You can expect about a 1% drop per month with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis.
Apple recommends replacing it when it reaches 80%.